Package com.landawn.abacus.util

Class IOUtil

java.lang.Object

com.landawn.abacus.util.IOUtil

public final class IOUtil
extends Object

Note: This class includes codes copied from Apache Commons Lang, Apache Commons IO, Google Guava and other open source projects under the Apache License 2.0. The methods copied from other libraries/frameworks/projects may be modified in this class.

Version:

$Revision: 0.8 $

Field Summary

Fields

Modifier and Type	Field	Description
static final int	CPU_CORES
static final String	CURRENT_PATH	current path retrieved by new File("./").getAbsolutePath()
static final int	EOF
static final String	FILE_SEPARATOR
static final boolean	IS_OS_LINUX
static final boolean	IS_OS_MAC
static final boolean	IS_OS_MAC_OSX
static final boolean	IS_OS_WINDOWS
static final boolean	IS_PLATFORM_ANDROID
static final String	JAVA_CLASS_PATH
static final String	JAVA_CLASS_VERSION
static final String	JAVA_HOME
static final String	JAVA_IO_TMPDIR
static final String	JAVA_RUNTIME_NAME
static final String	JAVA_RUNTIME_VERSION
static final String	JAVA_SPECIFICATION_NAME
static final String	JAVA_SPECIFICATION_VENDOR
static final String	JAVA_SPECIFICATION_VERSION
static final String	JAVA_VENDOR
static final JavaVersion	JAVA_VERSION
static final String	JAVA_VM_INFO
static final String	JAVA_VM_NAME
static final String	JAVA_VM_SPECIFICATION_NAME
static final String	JAVA_VM_SPECIFICATION_VENDOR
static final String	JAVA_VM_SPECIFICATION_VERSION
static final String	JAVA_VM_VENDOR
static final String	JAVA_VM_VERSION
static final String	LINE_SEPARATOR
static final int	MAX_MEMORY_IN_MB
static final long	ONE_EB
static final long	ONE_GB
static final long	ONE_KB
static final long	ONE_MB
static final long	ONE_PB
static final long	ONE_TB
static final long	ONE_ZB
static final String	OS_ARCH
static final String	OS_NAME
static final String	OS_VERSION
static final String	PATH_SEPARATOR
static final String	USER_COUNTRY
static final String	USER_DIR
static final String	USER_HOME
static final String	USER_LANGUAGE
static final String	USER_NAME
static final String	USER_TIMEZONE

Method Summary

Modifier and Type	Method	Description
static void	append(File output, byte[] bytes)
static void	append(File output, byte[] bytes, int offset, int len)
static void	append(File output, char[] chars)
static void	append(File output, char[] chars, int offset, int len)
static void	append(File output, char[] chars, int offset, int len, Charset charset)
static void	append(File output, char[] chars, Charset charset)
static long	append(File output, File input)
static long	append(File output, File input, long offset, long len)
static long	append(File output, InputStream input)
static long	append(File output, InputStream input, long offset, long len)
static long	append(File output, Reader input)
static long	append(File output, Reader input, long offset, long len)
static long	append(File output, Reader input, long offset, long len, Charset charset)
static long	append(File output, Reader input, Charset charset)
static void	append(File output, CharSequence str)
static void	append(File output, CharSequence str, Charset charset)
static void	appendLine(File output, CharSequence str)
static void	appendLine(File output, CharSequence str, Charset charset)
static char[]	bytes2Chars(byte[] bytes)	Bytes 2 chars.
static char[]	bytes2Chars(byte[] bytes, int offset, int len, Charset charset)	Bytes 2 chars.
static char[]	bytes2Chars(byte[] bytes, Charset charset)	Bytes 2 chars.
static byte[]	chars2Bytes(char[] chars)	Chars 2 bytes.
static byte[]	chars2Bytes(char[] chars, int offset, int len, Charset charset)	Chars 2 bytes.
static byte[]	chars2Bytes(char[] chars, Charset charset)	Chars 2 bytes.
static boolean	cleanDirectory(File directory)	Cleans a directory without deleting it.
static void	close(AutoCloseable closeable)
static void	closeAll(AutoCloseable... a)
static void	closeAll(Collection<? extends AutoCloseable> c)
static void	closeAllQuietly(AutoCloseable... a)	Close all quietly.
static void	closeAllQuietly(Collection<? extends AutoCloseable> c)	Close all quietly.
static void	closeQuietly(AutoCloseable closeable)
static long	copy(InputStream in, Path target, CopyOption... options)
static long	copy(Path source, OutputStream output)
static Path	copy(Path source, Path target, CopyOption... options)
static void	copyFileToDirectory(File srcFile, File destDir)
static void	copyFileToDirectory(File srcFile, File destDir, boolean preserveFileDate)
static <E extends Exception> void	copyFileToDirectory(File srcFile, File destDir, boolean preserveFileDate, Throwables.BiPredicate<? super File,? super File,E> filter)	Copy the specified scrFile if it's a file or its sub files/directories if it's a directory to the target destDir with the specified filter.
static void	copyURLToFile(URL source, File destination)	Copies bytes from the URL source to a file destination.
static void	copyURLToFile(URL source, File destination, int connectionTimeout, int readTimeout)	Copies bytes from the URL source to a file destination.
static boolean	createIfNotExists(File file)	Creates the if not exists.
static boolean	deleteAllIfExists(File file)	Delete the specified file and all its sub files/directories if it's a directory.
static boolean	deleteFiles(File dir)
static <E extends Exception> boolean	deleteFiles(File dir, Throwables.BiPredicate<? super File,? super File,E> filter)	Delete the specified dir if it's a file or its sub files/directories if it's a directory with the specified filter.
static boolean	deleteIfExists(File file)	Delete the specified file (or directory).
static long	freeDiskSpaceKb()	Returns the disk size of the volume which holds the working directory.
static long	freeDiskSpaceKb(long timeout)	Returns the disk size of the volume which holds the working directory.
static long	freeDiskSpaceKb(String path)	Returns the free space on a drive or volume in kilobytes by invoking the command line.
static long	freeDiskSpaceKb(String path, long timeout)	Returns the free space on a drive or volume in kilobytes by invoking the command line.
static String	getFileExtension(String fullName)	Note: copied from Google Guava under Apache License v2.
static String	getHostName()
static String	getNameWithoutExtension(String file)	Note: copied from Google Guava under Apache License v2.
static boolean	isFileNewer(File file, File reference)	Tests if the specified File is newer than the reference File.
static boolean	isFileNewer(File file, Date date)	Tests if the specified File is newer than the specified Date.
static boolean	isFileOlder(File file, File reference)	Tests if the specified File is older than the reference File.
static boolean	isFileOlder(File file, Date date)	Tests if the specified File is older than the specified Date.
static boolean	isSymbolicLink(File file)	Determines whether the specified file is a Symbolic Link rather than an actual file.
static List<String>	list(File parentPath)
static List<String>	list(File parentPath, boolean recursively, boolean excludeDirectory)
static <E extends Exception> List<String>	list(File parentPath, boolean recursively, Throwables.BiPredicate<? super File,? super File,E> filter)
static List<File>	listDirectories(File parentPath)
static List<File>	listDirectories(File parentPath, boolean recursively)
static List<File>	listFiles(File parentPath)
static List<File>	listFiles(File parentPath, boolean recursively, boolean excludeDirectory)
static <E extends Exception> List<File>	listFiles(File parentPath, boolean recursively, Throwables.BiPredicate<? super File,? super File,E> filter)
static MappedByteBuffer	map(File file)	Note: copied from Google Guava under Apache License v2.
static MappedByteBuffer	map(File file, FileChannel.MapMode mode)	Note: copied from Google Guava under Apache License v2.
static MappedByteBuffer	map(File file, FileChannel.MapMode mode, long offset, long len)	Note: copied from Google Guava under Apache License v2.
static long	merge(File[] sourceFiles, File destFile)
static long	merge(Collection<File> sourceFiles, File destFile)	Merge the specified source files into the destination file.
static boolean	mkdirIfNotExists(File dir)
static boolean	mkdirsIfNotExists(File dir)
static void	move(File srcFile, File destDir)
static BrotliInputStream	newBrotliInputStream(InputStream is)	New GZIP input stream.
static BufferedReader	newBufferedReader(File file)	New buffered reader.
static BufferedReader	newBufferedReader(File file, Charset charset)	New buffered reader.
static BufferedReader	newBufferedReader(InputStream is)	New buffered reader.
static BufferedReader	newBufferedReader(InputStream is, Charset charset)	New buffered reader.
static BufferedReader	newBufferedReader(Path path)	New buffered reader.
static BufferedReader	newBufferedReader(Path path, Charset charset)	New buffered reader.
static BufferedWriter	newBufferedWriter(File file)	New buffered writer.
static BufferedWriter	newBufferedWriter(File file, Charset charset)	New buffered writer.
static BufferedWriter	newBufferedWriter(OutputStream os)	New buffered writer.
static BufferedWriter	newBufferedWriter(OutputStream os, Charset charset)	New buffered writer.
static FileInputStream	newFileInputStream(File file)
static FileOutputStream	newFileOutputStream(File file)
static FileOutputStream	newFileOutputStream(String name)
static FileReader	newFileReader(File file)
static FileReader	newFileReader(File file, Charset charset)
static FileWriter	newFileWriter(File file)
static FileWriter	newFileWriter(File file, Charset charset)
static GZIPInputStream	newGZIPInputStream(InputStream is)	New GZIP input stream.
static GZIPInputStream	newGZIPInputStream(InputStream is, int bufferSize)	Creates a new input stream with the specified buffer size.
static GZIPOutputStream	newGZIPOutputStream(OutputStream os)	New GZIP output stream.
static GZIPOutputStream	newGZIPOutputStream(OutputStream os, int bufferSize)	Creates a new input stream with the specified buffer size.
static LZ4BlockInputStream	newLZ4BlockInputStream(InputStream is)	New LZ 4 block input stream.
static LZ4BlockOutputStream	newLZ4BlockOutputStream(OutputStream os)	New LZ 4 block output stream.
static LZ4BlockOutputStream	newLZ4BlockOutputStream(OutputStream os, int blockSize)	Creates a new input stream with the specified buffer size.
static SnappyInputStream	newSnappyInputStream(InputStream is)	New snappy input stream.
static SnappyOutputStream	newSnappyOutputStream(OutputStream os)	New snappy output stream.
static SnappyOutputStream	newSnappyOutputStream(OutputStream os, int bufferSize)	Creates a new input stream with the specified buffer size.
static <E extends Exception> void	parse(File file, int readThreadNum, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(File file, int readThreadNum, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)
static <E extends Exception> void	parse(File file, long lineOffset, long count, int readThreadNum, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(File file, long lineOffset, long count, int readThreadNum, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)	Parse the specified files/directory line by line.
static <E extends Exception> void	parse(File file, long lineOffset, long count, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(File file, long lineOffset, long count, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)	Parse the specified files/directory line by line.
static <E extends Exception> void	parse(File file, long lineOffset, long count, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(File file, long lineOffset, long count, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)
static <E extends Exception> void	parse(File file, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(File file, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)
static <E extends Exception> void	parse(InputStream is, long lineOffset, long count, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(InputStream is, long lineOffset, long count, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)	Parse the specified Reader line by line.
static <E extends Exception> void	parse(InputStream is, long lineOffset, long count, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(InputStream is, long lineOffset, long count, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)
static <E extends Exception> void	parse(InputStream is, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(InputStream is, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)
static <E extends Exception> void	parse(Reader reader, long lineOffset, long count, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(Reader reader, long lineOffset, long count, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)	Parse the specified Reader line by line.
static <E extends Exception> void	parse(Reader reader, long lineOffset, long count, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(Reader reader, long lineOffset, long count, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)
static <E extends Exception> void	parse(Reader reader, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(Reader reader, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)
static <E extends Exception> void	parse(List<File> files, int readThreadNum, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(List<File> files, int readThreadNum, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)
static <E extends Exception> void	parse(List<File> files, long lineOffset, long count, int readThreadNum, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(List<File> files, long lineOffset, long count, int readThreadNum, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)	Parse the specified files/directory line by line.
static <E extends Exception> void	parse(List<File> files, long lineOffset, long count, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(List<File> files, long lineOffset, long count, int processThreadNum, int queueSize, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)	Parse the specified files/directory line by line.
static <E extends Exception> void	parse(List<File> files, long lineOffset, long count, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(List<File> files, long lineOffset, long count, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)
static <E extends Exception> void	parse(List<File> files, Throwables.Consumer<String,E> lineParser)
static <E extends Exception, E2 extends Exception> void	parse(List<File> files, Throwables.Consumer<String,E> lineParser, Throwables.Runnable<E2> onComplete)
static int	read(File file, byte[] buf)
static int	read(File file, byte[] buf, int off, int len)
static int	read(File file, char[] buf)
static int	read(File file, char[] buf, int off, int len)
static int	read(File file, char[] buf, int off, int len, Charset charset)
static int	read(File file, char[] buf, Charset charset)
static int	read(InputStream is, byte[] buf)
static int	read(InputStream is, byte[] buf, int off, int len)
static int	read(Reader reader, char[] buf)
static int	read(Reader reader, char[] buf, int off, int len)
static byte[]	readAllBytes(File file)	Note: It should not be used to read File/InputStream with size closed to Integer.MAX_VALUE.
static byte[]	readAllBytes(InputStream is)	Note: It should not be used to read File/InputStream with size closed to Integer.MAX_VALUE.
static char[]	readAllChars(File file)	Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.
static char[]	readAllChars(File file, Charset encoding)	Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.
static char[]	readAllChars(InputStream is)	Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.
static char[]	readAllChars(InputStream is, Charset encoding)	Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.
static char[]	readAllChars(Reader reader)	Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.
static List<String>	readAllLines(File file)	Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.
static List<String>	readAllLines(File file, Charset encoding)	Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.
static List<String>	readAllLines(InputStream is)	Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.
static List<String>	readAllLines(InputStream is, Charset encoding)	Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.
static List<String>	readAllLines(Reader reader)	Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.
static String	readAllToString(File file)	Read all content into one String.
static String	readAllToString(File file, Charset encoding)	Read all content into one String.
static String	readAllToString(InputStream is)	Read all content into one String.
static String	readAllToString(InputStream is, Charset encoding)	Read all content into one String.
static String	readAllToString(Reader reader)	Read all content into one String.
static byte[]	readBytes(File file)
static byte[]	readBytes(File file, long offset, int maxLen)
static byte[]	readBytes(InputStream is)
static byte[]	readBytes(InputStream is, long offset, int maxLen)
static char[]	readChars(File file)
static char[]	readChars(File file, long offset, int maxLen)
static char[]	readChars(File file, long offset, int maxLen, Charset encoding)
static char[]	readChars(File file, Charset encoding)
static char[]	readChars(InputStream is)
static char[]	readChars(InputStream is, long offset, int maxLen)
static char[]	readChars(InputStream is, long offset, int maxLen, Charset encoding)
static char[]	readChars(InputStream is, Charset encoding)
static char[]	readChars(Reader reader)
static char[]	readChars(Reader reader, long offset, int maxLen)
static String	readFirstLine(File file)
static String	readFirstLine(File file, Charset encoding)
static String	readFirstLine(InputStream is)
static String	readFirstLine(InputStream is, Charset encoding)
static String	readFirstLine(Reader reader)
static String	readLastLine(File file)
static String	readLastLine(File file, Charset encoding)
static String	readLastLine(InputStream is)
static String	readLastLine(InputStream is, Charset encoding)
static String	readLastLine(Reader reader)
static String	readLine(File file, int lineIndex)
static String	readLine(File file, int lineIndex, Charset encoding)
static String	readLine(InputStream is, int lineIndex)
static String	readLine(InputStream is, int lineIndex, Charset encoding)
static String	readLine(Reader reader, int lineIndex)
static List<String>	readLines(File file)	Deprecated. replaced by readAllLines(File)
static List<String>	readLines(File file, int offset, int count)
static List<String>	readLines(File file, int offset, int count, Charset encoding)
static List<String>	readLines(File file, Charset encoding)	Deprecated. replaced by readAllLines(File, Charset)
static List<String>	readLines(InputStream is)	Deprecated. replaced by readAllLines(InputStream)
static List<String>	readLines(InputStream is, int offset, int count)
static List<String>	readLines(InputStream is, int offset, int count, Charset encoding)
static List<String>	readLines(InputStream is, Charset encoding)	Deprecated. replaced by readAllLines(InputStream, Charset)
static List<String>	readLines(Reader reader)	Deprecated. replaced by readAllLines(Reader)
static List<String>	readLines(Reader reader, int offset, int count)
static String	readToString(File file, long offset, int maxLen)
static String	readToString(File file, long offset, int maxLen, Charset encoding)
static String	readToString(InputStream is, long offset, int maxLen)
static String	readToString(InputStream is, long offset, int maxLen, Charset encoding)
static String	readToString(Reader reader, long offset, int maxLen)
static boolean	renameTo(File srcFile, String newFileName)
static String	simplifyPath(String pathname)	Note: copied from Google Guava under Apache License v2.
static long	sizeOf(File file)	Returns the size of the specified file or directory.
static long	sizeOfDirectory(File directory)	Counts the size of a directory recursively (sum of the length of all files).
static long	skip(InputStream input, long toSkip)	Return the count of skipped bytes.
static long	skip(Reader input, long toSkip)	Return the count of skipped chars.
static void	skipFully(InputStream input, long toSkip)
static void	skipFully(Reader input, long toSkip)
static void	split(File file, int countOfParts)
static void	split(File file, int countOfParts, File destDir)
static void	splitBySize(File file, long sizeOfPart)	Split by size.
static void	splitBySize(File file, long sizeOfPart, File destDir)	Mostly it's designed for (zipped/unzipped/log) text files.
static InputStream	string2InputStream(String str)	String 2 input stream.
static InputStream	string2InputStream(String str, Charset charset)	String 2 input stream.
static Reader	string2Reader(String str)	String 2 reader.
static Writer	stringBuilder2Writer(StringBuilder sb)	String builder 2 writer.
static File	toFile(URL url)	Convert from a URL to a File.
static File[]	toFiles(URL[] urls)	Converts each of an array of URL to a File.
static List<File>	toFiles(Collection<URL> urls)
static boolean	touch(File file)	Update the last modified time of the file to system current time if the specified file exists.
static URL	toURL(File file)
static URL[]	toURLs(File[] files)	To UR ls.
static List<URL>	toURLs(Collection<File> files)	To UR ls.
static void	unzip(File srcZipFile, File targetDir)
static void	write(File output, byte[] bytes)
static void	write(File output, byte[] bytes, int offset, int len)
static void	write(File output, char[] chars)
static void	write(File output, char[] chars, int offset, int len)
static void	write(File output, char[] chars, int offset, int len, Charset charset)
static void	write(File output, char[] chars, Charset charset)
static long	write(File output, File input)
static long	write(File output, File input, long offset, long len)
static long	write(File output, InputStream input)
static long	write(File output, InputStream input, long offset, long len)
static long	write(File output, Reader input)
static long	write(File output, Reader input, long offset, long len)
static long	write(File output, Reader input, long offset, long len, Charset charset)
static long	write(File output, Reader input, Charset charset)
static void	write(File output, CharSequence str)
static void	write(File output, CharSequence str, Charset charset)
static void	write(OutputStream output, byte[] bytes)
static void	write(OutputStream output, byte[] bytes, boolean flush)
static void	write(OutputStream output, byte[] bytes, int offset, int len)
static void	write(OutputStream output, byte[] bytes, int offset, int len, boolean flush)
static void	write(OutputStream output, char[] chars)
static void	write(OutputStream output, char[] chars, boolean flush)
static void	write(OutputStream output, char[] chars, int offset, int len)
static void	write(OutputStream output, char[] chars, int offset, int len, boolean flush)
static void	write(OutputStream output, char[] chars, int offset, int len, Charset charset)
static void	write(OutputStream output, char[] chars, int offset, int len, Charset charset, boolean flush)
static void	write(OutputStream output, char[] chars, Charset charset)
static long	write(OutputStream output, File input)
static long	write(OutputStream output, File input, boolean flush)
static long	write(OutputStream output, File input, long offset, long len)
static long	write(OutputStream output, File input, long offset, long len, boolean flush)
static long	write(OutputStream output, InputStream input)
static long	write(OutputStream output, InputStream input, boolean flush)
static long	write(OutputStream output, InputStream input, long offset, long len)
static long	write(OutputStream output, InputStream input, long offset, long len, boolean flush)
static void	write(OutputStream output, CharSequence str)
static void	write(OutputStream output, CharSequence str, boolean flush)
static void	write(OutputStream output, CharSequence str, Charset charset)
static void	write(OutputStream output, CharSequence str, Charset charset, boolean flush)
static void	write(Writer writer, boolean b)
static void	write(Writer writer, boolean b, boolean flush)
static void	write(Writer writer, byte b)
static void	write(Writer writer, byte b, boolean flush)
static void	write(Writer writer, char c)
static void	write(Writer output, char[] chars)
static void	write(Writer output, char[] chars, boolean flush)
static void	write(Writer output, char[] chars, int offset, int len)
static void	write(Writer output, char[] chars, int offset, int len, boolean flush)
static void	write(Writer writer, char c, boolean flush)
static void	write(Writer writer, double d)
static void	write(Writer writer, double d, boolean flush)
static void	write(Writer writer, float f)
static void	write(Writer writer, float f, boolean flush)
static void	write(Writer writer, int i)
static void	write(Writer writer, int i, boolean flush)
static void	write(Writer writer, long lng)
static void	write(Writer writer, long lng, boolean flush)
static void	write(Writer writer, short s)
static void	write(Writer writer, short s, boolean flush)
static long	write(Writer output, File input)
static long	write(Writer output, File input, boolean flush)
static long	write(Writer output, File input, long offset, long len)
static long	write(Writer output, File input, long offset, long len, boolean flush)
static long	write(Writer output, Reader input)
static long	write(Writer output, Reader input, boolean flush)
static long	write(Writer output, Reader input, long offset, long len)
static long	write(Writer output, Reader input, long offset, long len, boolean flush)
static void	write(Writer output, CharSequence str)
static void	write(Writer output, CharSequence str, boolean flush)
static void	writeLine(File file, Object obj)
static void	writeLine(OutputStream os, Object obj)
static void	writeLine(OutputStream os, Object obj, boolean flush)
static void	writeLine(Writer writer, Object obj)
static void	writeLine(Writer writer, Object obj, boolean flush)
static void	writeLines(File file, Object[] lines)
static void	writeLines(File file, Object[] lines, int offset, int count)
static void	writeLines(File file, Collection<?> lines)
static void	writeLines(File file, Collection<?> lines, int offset, int count)
static void	writeLines(OutputStream os, Object[] lines)
static void	writeLines(OutputStream os, Object[] lines, boolean flush)
static void	writeLines(OutputStream os, Object[] lines, int offset, int count)
static void	writeLines(OutputStream os, Object[] lines, int offset, int count, boolean flush)
static void	writeLines(OutputStream os, Collection<?> lines)
static void	writeLines(OutputStream os, Collection<?> lines, boolean flush)
static void	writeLines(OutputStream os, Collection<?> lines, int offset, int count)
static void	writeLines(OutputStream os, Collection<?> lines, int offset, int count, boolean flush)
static void	writeLines(Writer writer, Object[] lines)
static void	writeLines(Writer writer, Object[] lines, boolean flush)
static void	writeLines(Writer writer, Object[] lines, int offset, int count)
static void	writeLines(Writer writer, Object[] lines, int offset, int count, boolean flush)
static void	writeLines(Writer writer, Collection<?> lines)
static void	writeLines(Writer writer, Collection<?> lines, boolean flush)
static void	writeLines(Writer writer, Collection<?> lines, int offset, int count)
static void	writeLines(Writer writer, Collection<?> lines, int offset, int count, boolean flush)
static void	zip(File sourceFile, File targetFile)
static void	zip(Collection<File> sourceFiles, File targetFile)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

CPU_CORES

public static final int CPU_CORES

ONE_KB

public static final long ONE_KB

See Also:

• Constant Field Values

ONE_MB

public static final long ONE_MB

See Also:

• Constant Field Values

ONE_GB

public static final long ONE_GB

See Also:

• Constant Field Values

ONE_TB

public static final long ONE_TB

See Also:

• Constant Field Values

ONE_PB

public static final long ONE_PB

See Also:

• Constant Field Values

ONE_EB

public static final long ONE_EB

See Also:

• Constant Field Values

ONE_ZB

public static final long ONE_ZB

See Also:

• Constant Field Values

MAX_MEMORY_IN_MB

public static final int MAX_MEMORY_IN_MB

OS_NAME

public static final String OS_NAME

OS_VERSION

public static final String OS_VERSION

OS_ARCH

public static final String OS_ARCH

IS_OS_WINDOWS

public static final boolean IS_OS_WINDOWS

IS_OS_MAC

public static final boolean IS_OS_MAC

IS_OS_MAC_OSX

public static final boolean IS_OS_MAC_OSX

IS_OS_LINUX

public static final boolean IS_OS_LINUX

IS_PLATFORM_ANDROID

public static final boolean IS_PLATFORM_ANDROID

JAVA_HOME

public static final String JAVA_HOME

JAVA_VERSION

public static final JavaVersion JAVA_VERSION

JAVA_VENDOR

public static final String JAVA_VENDOR

JAVA_CLASS_PATH

public static final String JAVA_CLASS_PATH

JAVA_CLASS_VERSION

public static final String JAVA_CLASS_VERSION

JAVA_RUNTIME_NAME

public static final String JAVA_RUNTIME_NAME

JAVA_RUNTIME_VERSION

public static final String JAVA_RUNTIME_VERSION

JAVA_SPECIFICATION_NAME

public static final String JAVA_SPECIFICATION_NAME

JAVA_SPECIFICATION_VENDOR

public static final String JAVA_SPECIFICATION_VENDOR

JAVA_SPECIFICATION_VERSION

public static final String JAVA_SPECIFICATION_VERSION

JAVA_VM_INFO

public static final String JAVA_VM_INFO

JAVA_VM_NAME

public static final String JAVA_VM_NAME

JAVA_VM_SPECIFICATION_NAME

public static final String JAVA_VM_SPECIFICATION_NAME

JAVA_VM_SPECIFICATION_VENDOR

public static final String JAVA_VM_SPECIFICATION_VENDOR

JAVA_VM_SPECIFICATION_VERSION

public static final String JAVA_VM_SPECIFICATION_VERSION

JAVA_VM_VENDOR

public static final String JAVA_VM_VENDOR

JAVA_VM_VERSION

public static final String JAVA_VM_VERSION

JAVA_IO_TMPDIR

public static final String JAVA_IO_TMPDIR

USER_DIR

public static final String USER_DIR

USER_HOME

public static final String USER_HOME

USER_NAME

public static final String USER_NAME

USER_TIMEZONE

public static final String USER_TIMEZONE

USER_LANGUAGE

public static final String USER_LANGUAGE

USER_COUNTRY

public static final String USER_COUNTRY

CURRENT_PATH

public static final String CURRENT_PATH

current path retrieved by new File("./").getAbsolutePath()

PATH_SEPARATOR

public static final String PATH_SEPARATOR

FILE_SEPARATOR

public static final String FILE_SEPARATOR

LINE_SEPARATOR

public static final String LINE_SEPARATOR

EOF

public static final int EOF

See Also:

• Constant Field Values

Method Details

getHostName

public static String getHostName()

freeDiskSpaceKb

public static long freeDiskSpaceKb()
                            throws UncheckedIOException

Returns the disk size of the volume which holds the working directory.

Identical to:

 freeSpaceKb(new File(".").getAbsolutePath())
 

Returns:

Throws:

UncheckedIOException - if an error occurs when finding the free space

IllegalStateException - if an error occurred in initialisation

freeDiskSpaceKb

public static long freeDiskSpaceKb(long timeout)
                            throws UncheckedIOException

Returns the disk size of the volume which holds the working directory.

Identical to:

 freeSpaceKb(new File(".").getAbsolutePath())
 

Parameters:

timeout - The timeout amount in milliseconds or no timeout if the value is zero or less

Returns:

Throws:

UncheckedIOException - if an error occurs when finding the free space

IllegalStateException - if an error occurred in initialisation

freeDiskSpaceKb

public static long freeDiskSpaceKb(String path)
                            throws UncheckedIOException

Returns the free space on a drive or volume in kilobytes by invoking the command line.

 FileSystemUtils.freeSpaceKb("C:");       // Windows
 FileSystemUtils.freeSpaceKb("/volume");  // *nix
 

The free space is calculated via the command line. It uses 'dir /-c' on Windows, 'df -kP' on AIX/HP-UX and 'df -k' on other Unix.

In order to work, you must be running Windows, or have a implementation of Unix df that supports GNU format when passed -k (or -kP). If you are going to rely on this code, please check that it works on your OS by running some simple tests to compare the command line with the output from this class. If your operating system isn't supported, please raise a JIRA call detailing the exact result from df -k and as much other detail as possible, thanks.

Parameters:

path - the path to get free space for, not null, not empty on Unix

Returns:

Throws:

UncheckedIOException - if an error occurs when finding the free space

IllegalArgumentException - if the path is invalid

IllegalStateException - if an error occurred in initialisation

freeDiskSpaceKb

public static long freeDiskSpaceKb(String path,
 long timeout)
                            throws UncheckedIOException

Returns the free space on a drive or volume in kilobytes by invoking the command line.

 FileSystemUtils.freeSpaceKb("C:");       // Windows
 FileSystemUtils.freeSpaceKb("/volume");  // *nix
 

The free space is calculated via the command line. It uses 'dir /-c' on Windows, 'df -kP' on AIX/HP-UX and 'df -k' on other Unix.

In order to work, you must be running Windows, or have a implementation of Unix df that supports GNU format when passed -k (or -kP). If you are going to rely on this code, please check that it works on your OS by running some simple tests to compare the command line with the output from this class. If your operating system isn't supported, please raise a JIRA call detailing the exact result from df -k and as much other detail as possible, thanks.

Parameters:

path - the path to get free space for, not null, not empty on Unix

timeout - The timeout amount in milliseconds or no timeout if the value is zero or less

Returns:

Throws:

UncheckedIOException - if an error occurs when finding the free space

IllegalArgumentException - if the path is invalid

IllegalStateException - if an error occurred in initialisation

chars2Bytes

public static byte[] chars2Bytes(char[] chars)

Chars 2 bytes.

Parameters:

chars -

Returns:

chars2Bytes

public static byte[] chars2Bytes(char[] chars,
 Charset charset)

Chars 2 bytes.

Parameters:

chars -

charset -

Returns:

chars2Bytes

public static byte[] chars2Bytes(char[] chars,
 int offset,
 int len,
 Charset charset)

Chars 2 bytes.

Parameters:

chars -

offset -

len -

charset -

Returns:

bytes2Chars

public static char[] bytes2Chars(byte[] bytes)

Bytes 2 chars.

Parameters:

bytes -

Returns:

bytes2Chars

public static char[] bytes2Chars(byte[] bytes,
 Charset charset)

Bytes 2 chars.

Parameters:

bytes -

charset -

Returns:

bytes2Chars

public static char[] bytes2Chars(byte[] bytes,
 int offset,
 int len,
 Charset charset)

Bytes 2 chars.

Parameters:

bytes -

offset -

len -

charset -

Returns:

string2InputStream

public static InputStream string2InputStream(String str)

String 2 input stream.

Parameters:

str -

Returns:

string2InputStream

public static InputStream string2InputStream(String str,
 Charset charset)

String 2 input stream.

Parameters:

str -

charset -

Returns:

string2Reader

public static Reader string2Reader(String str)

String 2 reader.

Parameters:

str -

Returns:

stringBuilder2Writer

public static Writer stringBuilder2Writer(StringBuilder sb)

String builder 2 writer.

Parameters:

sb -

Returns:

readAllBytes

public static byte[] readAllBytes(File file)
                           throws UncheckedIOException

Note: It should not be used to read File/InputStream with size closed to Integer.MAX_VALUE.

Parameters:

file -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllBytes

public static byte[] readAllBytes(InputStream is)
                           throws UncheckedIOException

Note: It should not be used to read File/InputStream with size closed to Integer.MAX_VALUE.

Parameters:

is -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readBytes

public static byte[] readBytes(File file)
                        throws IOException

Parameters:

file -

Returns:

Throws:

IOException - the unchecked IO exception

See Also:

• readAllBytes(File)

readBytes

public static byte[] readBytes(File file,
 long offset,
 int maxLen)
                        throws IOException

Parameters:

file -

offset -

maxLen -

Returns:

Throws:

IOException

readBytes

public static byte[] readBytes(InputStream is)
                        throws IOException

Parameters:

is -

Returns:

Throws:

IOException

See Also:

• readAllBytes(InputStream)

readBytes

public static byte[] readBytes(InputStream is,
 long offset,
 int maxLen)
                        throws IOException

Parameters:

is -

offset -

maxLen -

Returns:

Throws:

IOException

readAllChars

public static char[] readAllChars(File file)
                           throws UncheckedIOException

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

file -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllChars

public static char[] readAllChars(File file,
 Charset encoding)
                           throws UncheckedIOException

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

file -

encoding -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllChars

public static char[] readAllChars(InputStream is)
                           throws UncheckedIOException

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

is -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllChars

public static char[] readAllChars(InputStream is,
 Charset encoding)
                           throws UncheckedIOException

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

is -

encoding -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllChars

public static char[] readAllChars(Reader reader)
                           throws UncheckedIOException

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

reader -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readChars

public static char[] readChars(File file)
                        throws IOException

Parameters:

file -

Returns:

Throws:

IOException

See Also:

• readAllChars(File)

readChars

public static char[] readChars(File file,
 Charset encoding)
                        throws IOException

Parameters:

file -

encoding -

Returns:

Throws:

IOException

See Also:

• readAllChars(File, Charset)

readChars

public static char[] readChars(File file,
 long offset,
 int maxLen)
                        throws IOException

Parameters:

file -

offset -

maxLen -

Returns:

Throws:

IOException

readChars

public static char[] readChars(File file,
 long offset,
 int maxLen,
 Charset encoding)
                        throws IOException

Parameters:

file -

offset -

maxLen -

encoding -

Returns:

Throws:

IOException

readChars

public static char[] readChars(InputStream is)
                        throws IOException

Parameters:

is -

Returns:

Throws:

IOException

See Also:

• readAllChars(InputStream)

readChars

public static char[] readChars(InputStream is,
 Charset encoding)
                        throws IOException

Parameters:

is -

encoding -

Returns:

Throws:

IOException

See Also:

• readAllChars(InputStream, encoding)

readChars

public static char[] readChars(InputStream is,
 long offset,
 int maxLen)
                        throws IOException

Parameters:

is -

offset -

maxLen -

Returns:

Throws:

IOException

readChars

public static char[] readChars(InputStream is,
 long offset,
 int maxLen,
 Charset encoding)
                        throws IOException

Parameters:

is -

offset -

maxLen -

encoding -

Returns:

Throws:

IOException

readChars

public static char[] readChars(Reader reader)
                        throws IOException

Parameters:

reader -

Returns:

Throws:

IOException

See Also:

• readAllChars(Reader)

readChars

public static char[] readChars(Reader reader,
 long offset,
 int maxLen)
                        throws IOException

Parameters:

reader -

offset -

maxLen -

Returns:

Throws:

IOException

readAllToString

public static String readAllToString(File file)
                              throws UncheckedIOException

Read all content into one String.
Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

file -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllToString

public static String readAllToString(File file,
 Charset encoding)
                              throws UncheckedIOException

Read all content into one String.
Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

file -

encoding -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllToString

public static String readAllToString(InputStream is)
                              throws UncheckedIOException

Read all content into one String.
Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

is -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllToString

public static String readAllToString(InputStream is,
 Charset encoding)
                              throws UncheckedIOException

Read all content into one String.
Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

is -

encoding -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllToString

public static String readAllToString(Reader reader)
                              throws UncheckedIOException

Read all content into one String.
Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

reader -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readToString

public static String readToString(File file,
 long offset,
 int maxLen)
                           throws UncheckedIOException

Parameters:

file -

offset -

maxLen -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readToString

public static String readToString(File file,
 long offset,
 int maxLen,
 Charset encoding)
                           throws UncheckedIOException

Parameters:

file -

offset -

maxLen -

encoding -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readToString

public static String readToString(InputStream is,
 long offset,
 int maxLen)
                           throws UncheckedIOException

Parameters:

is -

offset -

maxLen -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readToString

public static String readToString(InputStream is,
 long offset,
 int maxLen,
 Charset encoding)
                           throws UncheckedIOException

Parameters:

is -

offset -

maxLen -

encoding -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readToString

public static String readToString(Reader reader,
 long offset,
 int maxLen)
                           throws UncheckedIOException

Parameters:

reader -

offset -

maxLen -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllLines

public static List<String> readAllLines(File file)
                                 throws UncheckedIOException

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

file -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllLines

public static List<String> readAllLines(File file,
 Charset encoding)
                                 throws UncheckedIOException

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

file -

encoding -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllLines

public static List<String> readAllLines(InputStream is)
                                 throws UncheckedIOException

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

is -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllLines

public static List<String> readAllLines(InputStream is,
 Charset encoding)
                                 throws UncheckedIOException

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

is -

encoding -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readAllLines

public static List<String> readAllLines(Reader reader)
                                 throws UncheckedIOException

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

reader -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readFirstLine

public static String readFirstLine(File file)
                            throws IOException

Parameters:

file -

Returns:

null if the specified file/InputStream/Reader is empty.

Throws:

IOException

readFirstLine

public static String readFirstLine(File file,
 Charset encoding)
                            throws IOException

Parameters:

file -

encoding -

Returns:

null if the specified file/InputStream/Reader is empty.

Throws:

IOException

readFirstLine

public static String readFirstLine(InputStream is)
                            throws IOException

Parameters:

is -

Returns:

null if the specified file/InputStream/Reader is empty.

Throws:

IOException

readFirstLine

public static String readFirstLine(InputStream is,
 Charset encoding)
                            throws IOException

Parameters:

is -

encoding -

Returns:

null if the specified file/InputStream/Reader is empty.

Throws:

IOException

readFirstLine

public static String readFirstLine(Reader reader)
                            throws IOException

Parameters:

reader -

Returns:

null if the specified file/InputStream/Reader is empty.

Throws:

IOException

readLastLine

public static String readLastLine(File file)
                           throws IOException

Parameters:

file -

Returns:

Throws:

IOException

readLastLine

public static String readLastLine(File file,
 Charset encoding)
                           throws IOException

Parameters:

file -

encoding -

Returns:

null if the specified file/InputStream/Reader is empty.

Throws:

IOException

readLastLine

public static String readLastLine(InputStream is)
                           throws IOException

Parameters:

is -

Returns:

null if the specified file/InputStream/Reader is empty.

Throws:

IOException

readLastLine

public static String readLastLine(InputStream is,
 Charset encoding)
                           throws IOException

Parameters:

is -

encoding -

Returns:

null if the specified file/InputStream/Reader is empty.

Throws:

IOException

readLastLine

public static String readLastLine(Reader reader)
                           throws IOException

Parameters:

reader -

Returns:

null if the specified file/InputStream/Reader is empty.

Throws:

IOException

readLine

public static String readLine(File file,
 int lineIndex)
                       throws IOException

Parameters:

file -

lineIndex -

Returns:

null if line size of the specified file/InputStream/Reader is less than lineIndx + 1.

Throws:

IOException

readLine

public static String readLine(File file,
 int lineIndex,
 Charset encoding)
                       throws IOException

Parameters:

file -

lineIndex -

encoding -

Returns:

null if line size of the specified file/InputStream/Reader is less than lineIndx + 1.

Throws:

IOException

readLine

public static String readLine(InputStream is,
 int lineIndex)
                       throws IOException

Parameters:

is -

lineIndex -

Returns:

null if line size of the specified file/InputStream/Reader is less than lineIndx + 1.

Throws:

IOException

readLine

public static String readLine(InputStream is,
 int lineIndex,
 Charset encoding)
                       throws IOException

Parameters:

is -

lineIndex -

encoding -

Returns:

null if line size of the specified file/InputStream/Reader is less than lineIndx + 1.

Throws:

IOException

readLine

public static String readLine(Reader reader,
 int lineIndex)
                       throws IOException

Parameters:

reader -

lineIndex -

Returns:

null if line size of the specified file/InputStream/Reader is less than lineIndx + 1.

Throws:

IOException

readLines

@Deprecated
public static List<String> readLines(File file)
                              throws UncheckedIOException

Deprecated.

replaced by readAllLines(File)

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

file -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readLines

@Deprecated
public static List<String> readLines(File file,
 Charset encoding)
                              throws UncheckedIOException

Deprecated.

replaced by readAllLines(File, Charset)

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

file -

encoding -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readLines

@Deprecated
public static List<String> readLines(InputStream is)
                              throws UncheckedIOException

Deprecated.

replaced by readAllLines(InputStream)

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

is -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readLines

@Deprecated
public static List<String> readLines(InputStream is,
 Charset encoding)
                              throws UncheckedIOException

Deprecated.

replaced by readAllLines(InputStream, Charset)

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

is -

encoding -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readLines

@Deprecated
public static List<String> readLines(Reader reader)
                              throws UncheckedIOException

Deprecated.

replaced by readAllLines(Reader)

Note: It should not be used to read File/InputStream/Reader with size closed to Integer.MAX_VALUE.

Parameters:

reader -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

readLines

public static List<String> readLines(File file,
 int offset,
 int count)
                              throws IOException

Parameters:

file -

offset -

count -

Returns:

Throws:

IOException

readLines

public static List<String> readLines(File file,
 int offset,
 int count,
 Charset encoding)
                              throws IOException

Parameters:

file -

offset -

count -

encoding -

Returns:

Throws:

IOException

readLines

public static List<String> readLines(InputStream is,
 int offset,
 int count)
                              throws IOException

Parameters:

is -

offset -

count -

Returns:

Throws:

IOException

readLines

public static List<String> readLines(InputStream is,
 int offset,
 int count,
 Charset encoding)
                              throws IOException

Parameters:

is -

offset -

count -

encoding -

Returns:

Throws:

IOException

readLines

public static List<String> readLines(Reader reader,
 int offset,
 int count)
                              throws IOException

Parameters:

reader -

offset -

count -

Returns:

Throws:

IOException

read

public static int read(File file,
 byte[] buf)
                throws IOException

Parameters:

file -

buf -

Returns:

Throws:

IOException

read

public static int read(File file,
 byte[] buf,
 int off,
 int len)
                throws IOException

Parameters:

file -

buf -

off - the start offset in array b at which the data is written.

len -

Returns:

Throws:

IOException

read

public static int read(InputStream is,
 byte[] buf)
                throws IOException

Parameters:

is -

buf -

Returns:

Throws:

IOException - Signals that an I/O exception has occurred.

read

public static int read(InputStream is,
 byte[] buf,
 int off,
 int len)
                throws IOException

Parameters:

is -

buf -

off - the start offset in array b at which the data is written.

len -

Returns:

Throws:

IOException - Signals that an I/O exception has occurred.

read

public static int read(File file,
 char[] buf)
                throws IOException

Parameters:

file -

buf -

Returns:

Throws:

IOException

read

public static int read(File file,
 char[] buf,
 Charset charset)
                throws IOException

Parameters:

file -

buf -

charset -

Returns:

Throws:

IOException

read

public static int read(File file,
 char[] buf,
 int off,
 int len)
                throws IOException

Parameters:

file -

buf -

off - the start offset in array b at which the data is written.

len -

Returns:

Throws:

IOException

read

public static int read(File file,
 char[] buf,
 int off,
 int len,
 Charset charset)
                throws IOException

Parameters:

file -

buf -

off -

len -

charset -

Returns:

Throws:

IOException

read

public static int read(Reader reader,
 char[] buf)
                throws IOException

Parameters:

reader -

buf -

Returns:

Throws:

IOException - Signals that an I/O exception has occurred.

read

public static int read(Reader reader,
 char[] buf,
 int off,
 int len)
                throws IOException

Parameters:

reader -

buf -

off - the start offset in array b at which the data is written.

len -

Returns:

Throws:

IOException - Signals that an I/O exception has occurred.

writeLine

public static void writeLine(File file,
 Object obj)
                      throws IOException

Parameters:

file -

obj -

Throws:

IOException

writeLine

public static void writeLine(OutputStream os,
 Object obj)
                      throws IOException

Parameters:

os -

obj -

Throws:

IOException

writeLine

public static void writeLine(OutputStream os,
 Object obj,
 boolean flush)
                      throws IOException

Parameters:

os -

obj -

flush -

Throws:

IOException

writeLine

public static void writeLine(Writer writer,
 Object obj)
                      throws IOException

Parameters:

writer -

obj -

Throws:

IOException

writeLine

public static void writeLine(Writer writer,
 Object obj,
 boolean flush)
                      throws IOException

Parameters:

writer -

obj -

flush -

Throws:

IOException

writeLines

public static void writeLines(File file,
 Object[] lines)
                       throws IOException

Parameters:

file -

lines -

Throws:

IOException

writeLines

public static void writeLines(File file,
 Object[] lines,
 int offset,
 int count)
                       throws IOException

Parameters:

file -

lines -

offset -

count -

Throws:

IOException

writeLines

public static void writeLines(OutputStream os,
 Object[] lines)
                       throws IOException

Parameters:

os -

lines -

Throws:

IOException

writeLines

public static void writeLines(OutputStream os,
 Object[] lines,
 boolean flush)
                       throws IOException

Parameters:

os -

lines -

flush -

Throws:

IOException

writeLines

public static void writeLines(OutputStream os,
 Object[] lines,
 int offset,
 int count)
                       throws IOException

Parameters:

os -

lines -

offset -

count -

Throws:

IOException

writeLines

public static void writeLines(OutputStream os,
 Object[] lines,
 int offset,
 int count,
 boolean flush)
                       throws IOException

Parameters:

os -

lines -

offset -

count -

flush -

Throws:

IOException

writeLines

public static void writeLines(Writer writer,
 Object[] lines)
                       throws IOException

Parameters:

writer -

lines -

Throws:

IOException

writeLines

public static void writeLines(Writer writer,
 Object[] lines,
 boolean flush)
                       throws IOException

Parameters:

writer -

lines -

flush -

Throws:

IOException

writeLines

public static void writeLines(Writer writer,
 Object[] lines,
 int offset,
 int count)
                       throws IOException

Parameters:

writer -

lines -

offset -

count -

Throws:

IOException

writeLines

public static void writeLines(Writer writer,
 Object[] lines,
 int offset,
 int count,
 boolean flush)
                       throws IOException

Parameters:

writer -

lines -

offset -

count -

flush -

Throws:

IOException

writeLines

public static void writeLines(File file,
 Collection<?> lines)
                       throws IOException

Parameters:

file -

lines -

Throws:

IOException

writeLines

public static void writeLines(File file,
 Collection<?> lines,
 int offset,
 int count)
                       throws IOException

Parameters:

file -

lines -

offset -

count -

Throws:

IOException

writeLines

public static void writeLines(OutputStream os,
 Collection<?> lines)
                       throws IOException

Parameters:

os -

lines -

Throws:

IOException

writeLines

public static void writeLines(OutputStream os,
 Collection<?> lines,
 boolean flush)
                       throws IOException

Parameters:

os -

lines -

flush -

Throws:

IOException

writeLines

public static void writeLines(OutputStream os,
 Collection<?> lines,
 int offset,
 int count)
                       throws IOException

Parameters:

os -

lines -

offset -

count -

Throws:

IOException

writeLines

public static void writeLines(OutputStream os,
 Collection<?> lines,
 int offset,
 int count,
 boolean flush)
                       throws IOException

Parameters:

os -

lines -

offset -

count -

flush -

Throws:

IOException

writeLines

public static void writeLines(Writer writer,
 Collection<?> lines)
                       throws IOException

Parameters:

writer -

lines -

Throws:

IOException

writeLines

public static void writeLines(Writer writer,
 Collection<?> lines,
 boolean flush)
                       throws IOException

Parameters:

writer -

lines -

flush -

Throws:

IOException

writeLines

public static void writeLines(Writer writer,
 Collection<?> lines,
 int offset,
 int count)
                       throws IOException

Parameters:

writer -

lines -

offset -

count -

Throws:

IOException

writeLines

public static void writeLines(Writer writer,
 Collection<?> lines,
 int offset,
 int count,
 boolean flush)
                       throws IOException

Parameters:

writer -

lines -

offset -

count -

flush -

Throws:

IOException

write

public static void write(Writer writer,
 boolean b)
                  throws IOException

Parameters:

writer -

b -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 boolean b,
 boolean flush)
                  throws IOException

Parameters:

writer -

b -

flush -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 char c)
                  throws IOException

Parameters:

writer -

c -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 char c,
 boolean flush)
                  throws IOException

Parameters:

writer -

c -

flush -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 byte b)
                  throws IOException

Parameters:

writer -

b -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 byte b,
 boolean flush)
                  throws IOException

Parameters:

writer -

b -

flush -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 short s)
                  throws IOException

Parameters:

writer -

s -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 short s,
 boolean flush)
                  throws IOException

Parameters:

writer -

s -

flush -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 int i)
                  throws IOException

Parameters:

writer -

i -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 int i,
 boolean flush)
                  throws IOException

Parameters:

writer -

i -

flush -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 long lng)
                  throws IOException

Parameters:

writer -

lng -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 long lng,
 boolean flush)
                  throws IOException

Parameters:

writer -

lng -

flush -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 float f)
                  throws IOException

Parameters:

writer -

f -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 float f,
 boolean flush)
                  throws IOException

Parameters:

writer -

f -

flush -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 double d)
                  throws IOException

Parameters:

writer -

d -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(Writer writer,
 double d,
 boolean flush)
                  throws IOException

Parameters:

writer -

d -

flush -

Throws:

IOException - Signals that an I/O exception has occurred.

write

public static void write(File output,
 CharSequence str)
                  throws IOException

Parameters:

output -

str -

Throws:

IOException

write

public static void write(File output,
 CharSequence str,
 Charset charset)
                  throws IOException

Parameters:

output -

str -

charset -

Throws:

IOException

write

public static void write(OutputStream output,
 CharSequence str)
                  throws IOException

Parameters:

output -

str -

Throws:

IOException

write

public static void write(OutputStream output,
 CharSequence str,
 Charset charset)
                  throws IOException

Parameters:

output -

str -

charset -

Throws:

IOException

write

public static void write(OutputStream output,
 CharSequence str,
 boolean flush)
                  throws IOException

Parameters:

output -

str -

flush -

Throws:

IOException

write

public static void write(OutputStream output,
 CharSequence str,
 Charset charset,
 boolean flush)
                  throws IOException

Parameters:

output -

str -

charset -

flush -

Throws:

IOException

write

public static void write(Writer output,
 CharSequence str)
                  throws IOException

Parameters:

output -

str -

Throws:

IOException

write

public static void write(Writer output,
 CharSequence str,
 boolean flush)
                  throws IOException

Parameters:

output -

str -

flush -

Throws:

IOException

write

public static void write(File output,
 char[] chars)
                  throws IOException

Parameters:

output -

chars -

Throws:

IOException

write

public static void write(File output,
 char[] chars,
 Charset charset)
                  throws IOException

Parameters:

output -

chars -

charset -

Throws:

IOException

write

public static void write(File output,
 char[] chars,
 int offset,
 int len)
                  throws IOException

Parameters:

output -

chars -

offset -

len -

Throws:

IOException

write

public static void write(File output,
 char[] chars,
 int offset,
 int len,
 Charset charset)
                  throws IOException

Parameters:

output -

chars -

offset -

len -

charset -

Throws:

IOException

write

public static void write(OutputStream output,
 char[] chars)
                  throws IOException

Parameters:

output -

chars -

Throws:

IOException

write

public static void write(OutputStream output,
 char[] chars,
 Charset charset)
                  throws IOException

Parameters:

output -

chars -

charset -

Throws:

IOException

write

public static void write(OutputStream output,
 char[] chars,
 int offset,
 int len)
                  throws IOException

Parameters:

output -

chars -

offset -

len -

Throws:

IOException

write

public static void write(OutputStream output,
 char[] chars,
 int offset,
 int len,
 Charset charset)
                  throws IOException

Parameters:

output -

chars -

offset -

len -

charset -

Throws:

IOException

write

public static void write(OutputStream output,
 char[] chars,
 boolean flush)
                  throws IOException

Parameters:

output -

chars -

flush -

Throws:

IOException

write

public static void write(OutputStream output,
 char[] chars,
 int offset,
 int len,
 boolean flush)
                  throws IOException

Parameters:

output -

chars -

offset -

len -

flush -

Throws:

IOException

write

public static void write(OutputStream output,
 char[] chars,
 int offset,
 int len,
 Charset charset,
 boolean flush)
                  throws IOException

Parameters:

output -

chars -

offset -

len -

charset -

flush -

Throws:

IOException

write

public static void write(Writer output,
 char[] chars)
                  throws IOException

Parameters:

output -

chars -

Throws:

IOException

write

public static void write(Writer output,
 char[] chars,
 int offset,
 int len)
                  throws IOException

Parameters:

output -

chars -

offset -

len -

Throws:

IOException

write

public static void write(Writer output,
 char[] chars,
 boolean flush)
                  throws IOException

Parameters:

output -

chars -

flush -

Throws:

IOException

write

public static void write(Writer output,
 char[] chars,
 int offset,
 int len,
 boolean flush)
                  throws IOException

Parameters:

output -

chars -

offset -

len -

flush -

Throws:

IOException

write

public static void write(File output,
 byte[] bytes)
                  throws IOException

Parameters:

output -

bytes -

Throws:

IOException

write

public static void write(File output,
 byte[] bytes,
 int offset,
 int len)
                  throws IOException

Parameters:

output -

bytes -

offset -

len -

Throws:

IOException

write

public static void write(OutputStream output,
 byte[] bytes)
                  throws IOException

Parameters:

output -

bytes -

Throws:

IOException

write

public static void write(OutputStream output,
 byte[] bytes,
 int offset,
 int len)
                  throws IOException

Parameters:

output -

bytes -

offset -

len -

Throws:

IOException

write

public static void write(OutputStream output,
 byte[] bytes,
 boolean flush)
                  throws IOException

Parameters:

output -

bytes -

flush -

Throws:

IOException

write

public static void write(OutputStream output,
 byte[] bytes,
 int offset,
 int len,
 boolean flush)
                  throws IOException

Parameters:

output -

bytes -

offset -

len -

flush -

Throws:

IOException

write

public static long write(File output,
 InputStream input)
                  throws IOException

Parameters:

output -

input -

Returns:

Throws:

IOException

write

public static long write(File output,
 InputStream input,
 long offset,
 long len)
                  throws IOException

Parameters:

output -

input -

offset - by byte

len - by byte

Returns:

Throws:

IOException

write

public static long write(OutputStream output,
 InputStream input)
                  throws IOException

Parameters:

output -

input -

Returns:

Throws:

IOException

write

public static long write(OutputStream output,
 InputStream input,
 long offset,
 long len)
                  throws IOException

Parameters:

output -

input -

offset -

len -

Returns:

Throws:

IOException

write

public static long write(OutputStream output,
 InputStream input,
 boolean flush)
                  throws IOException

Parameters:

output -

input -

flush -

Returns:

Throws:

IOException

write

public static long write(OutputStream output,
 InputStream input,
 long offset,
 long len,
 boolean flush)
                  throws IOException

Parameters:

output -

input -

offset - by byte

len - by byte

flush -

Returns:

Throws:

IOException

write

public static long write(File output,
 Reader input)
                  throws IOException

Parameters:

output -

input -

Returns:

Throws:

IOException

write

public static long write(File output,
 Reader input,
 Charset charset)
                  throws IOException

Parameters:

output -

input -

charset -

Returns:

Throws:

IOException

write

public static long write(File output,
 Reader input,
 long offset,
 long len)
                  throws IOException

Parameters:

output -

input -

offset -

len -

Returns:

Throws:

IOException

write

public static long write(File output,
 Reader input,
 long offset,
 long len,
 Charset charset)
                  throws IOException

Parameters:

output -

input -

offset - by char

len - by char

charset -

Returns:

Throws:

IOException

write

public static long write(Writer output,
 Reader input)
                  throws IOException

Parameters:

output -

input -

Returns:

Throws:

IOException

write

public static long write(Writer output,
 Reader input,
 long offset,
 long len)
                  throws IOException

Parameters:

output -

input -

offset -

len -

Returns:

Throws:

IOException

write

public static long write(Writer output,
 Reader input,
 boolean flush)
                  throws IOException

Parameters:

output -

input -

flush -

Returns:

Throws:

IOException

write

public static long write(Writer output,
 Reader input,
 long offset,
 long len,
 boolean flush)
                  throws IOException

Parameters:

output -

input -

offset - by char

len - by char

flush -

Returns:

Throws:

IOException

write

public static long write(File output,
 File input)
                  throws IOException

Parameters:

output -

input -

Returns:

Throws:

IOException

write

public static long write(File output,
 File input,
 long offset,
 long len)
                  throws IOException

Parameters:

output -

input -

offset -

len -

Returns:

Throws:

IOException

write

public static long write(OutputStream output,
 File input)
                  throws IOException

Parameters:

output -

input -

Returns:

Throws:

IOException

write

public static long write(OutputStream output,
 File input,
 long offset,
 long len)
                  throws IOException

Parameters:

output -

input -

offset -

len -

Returns:

Throws:

IOException

write

public static long write(OutputStream output,
 File input,
 boolean flush)
                  throws IOException

Parameters:

output -

input -

flush -

Returns:

Throws:

IOException

write

public static long write(OutputStream output,
 File input,
 long offset,
 long len,
 boolean flush)
                  throws IOException

Parameters:

output -

input -

offset - by byte

len - by byte

flush -

Returns:

Throws:

IOException

write

public static long write(Writer output,
 File input)
                  throws IOException

Parameters:

output -

input -

Returns:

Throws:

IOException

write

public static long write(Writer output,
 File input,
 long offset,
 long len)
                  throws IOException

Parameters:

output -

input -

offset -

len -

Returns:

Throws:

IOException

write

public static long write(Writer output,
 File input,
 boolean flush)
                  throws IOException

Parameters:

output -

input -

flush -

Returns:

Throws:

IOException

write

public static long write(Writer output,
 File input,
 long offset,
 long len,
 boolean flush)
                  throws IOException

Parameters:

output -

input -

offset - by char

len - by char

flush -

Returns:

Throws:

IOException

append

public static void append(File output,
 byte[] bytes)
                   throws IOException

Parameters:

output -

bytes -

Throws:

IOException

append

public static void append(File output,
 byte[] bytes,
 int offset,
 int len)
                   throws IOException

Parameters:

output -

bytes -

offset -

len -

Throws:

IOException

append

public static void append(File output,
 char[] chars)
                   throws IOException

Parameters:

output -

chars -

Throws:

IOException

append

public static void append(File output,
 char[] chars,
 Charset charset)
                   throws IOException

Parameters:

output -

chars -

charset -

Throws:

IOException

append

public static void append(File output,
 char[] chars,
 int offset,
 int len)
                   throws IOException

Parameters:

output -

chars -

offset -

len -

Throws:

IOException

append

public static void append(File output,
 char[] chars,
 int offset,
 int len,
 Charset charset)
                   throws IOException

Parameters:

output -

chars -

offset -

len -

charset -

Throws:

IOException

append

public static void append(File output,
 CharSequence str)
                   throws IOException

Parameters:

output -

str -

Throws:

IOException

append

public static void append(File output,
 CharSequence str,
 Charset charset)
                   throws IOException

Parameters:

output -

str -

charset -

Throws:

IOException

append

public static long append(File output,
 InputStream input)
                   throws IOException

Parameters:

output -

input -

Returns:

Throws:

IOException

append

public static long append(File output,
 InputStream input,
 long offset,
 long len)
                   throws IOException

Parameters:

output -

input -

offset - by byte

len - by byte

Returns:

Throws:

IOException

append

public static long append(File output,
 Reader input)
                   throws IOException

Parameters:

output -

input -

Returns:

Throws:

IOException

append

public static long append(File output,
 Reader input,
 Charset charset)
                   throws IOException

Parameters:

output -

input -

charset -

Returns:

Throws:

IOException

append

public static long append(File output,
 Reader input,
 long offset,
 long len)
                   throws IOException

Parameters:

output -

input -

offset -

len -

Returns:

Throws:

IOException

append

public static long append(File output,
 Reader input,
 long offset,
 long len,
 Charset charset)
                   throws IOException

Parameters:

output -

input -

offset - by char

len - by char

charset -

Returns:

Throws:

IOException

append

public static long append(File output,
 File input)
                   throws IOException

Parameters:

output -

input -

Returns:

Throws:

IOException

append

public static long append(File output,
 File input,
 long offset,
 long len)
                   throws IOException

Parameters:

output -

input -

offset -

len -

Returns:

Throws:

IOException

appendLine

public static void appendLine(File output,
 CharSequence str)
                       throws IOException

Parameters:

output -

str -

Throws:

IOException

appendLine

public static void appendLine(File output,
 CharSequence str,
 Charset charset)
                       throws IOException

Parameters:

output -

str -

charset -

Throws:

IOException

skip

public static long skip(InputStream input,
 long toSkip)
                 throws IOException

Return the count of skipped bytes.

Parameters:

input -

toSkip -

Returns:

Throws:

IOException

skip

public static long skip(Reader input,
 long toSkip)
                 throws IOException

Return the count of skipped chars.

Parameters:

input -

toSkip -

Returns:

Throws:

IOException

skipFully

public static void skipFully(InputStream input,
 long toSkip)
                      throws IOException

Parameters:

input -

toSkip -

Throws:

IOException - if the remaining length of the specified input is less than the specified toSkip

skipFully

public static void skipFully(Reader input,
 long toSkip)
                      throws IOException

Parameters:

input -

toSkip -

Throws:

IOException - if the remaining length of the specified input is less than the specified toSkip

map

public static MappedByteBuffer map(File file)
                            throws IOException

Note: copied from Google Guava under Apache License v2.

Parameters:

file -

Returns:

Throws:

IOException

map

public static MappedByteBuffer map(File file,
 FileChannel.MapMode mode)
                            throws IOException

Note: copied from Google Guava under Apache License v2. Fully maps a file in to memory as per FileChannel.map(java.nio.channels.FileChannel.MapMode, long, long) using the requested FileChannel.MapMode.

Files are mapped from offset 0 to its length.

This only works for files <= Integer.MAX_VALUE bytes.

Parameters:

file - the file to map

mode - the mode to use when mapping file

Returns:

a buffer reflecting file

Throws:

IOException

Since:

2.0

See Also:

• FileChannel.map(MapMode, long, long)

map

public static MappedByteBuffer map(File file,
 FileChannel.MapMode mode,
 long offset,
 long len)
                            throws IOException

Note: copied from Google Guava under Apache License v2. Maps a file in to memory as per FileChannel.map(java.nio.channels.FileChannel.MapMode, long, long) using the requested FileChannel.MapMode.

Files are mapped from offset 0 to size.

If the mode is FileChannel.MapMode.READ_WRITE and the file does not exist, it will be created with the requested size. Thus this method is useful for creating memory mapped files which do not yet exist.

This only works for files <= Integer.MAX_VALUE bytes.

Parameters:

file - the file to map

mode - the mode to use when mapping file

offset -

len -

Returns:

a buffer reflecting file

Throws:

IOException

Since:

2.0

See Also:

• FileChannel.map(MapMode, long, long)

simplifyPath

public static String simplifyPath(String pathname)

Note: copied from Google Guava under Apache License v2. Returns the lexically cleaned form of the path name, usually (but not always) equivalent to the original. The following heuristics are used:

• empty string becomes .
• . stays as .
• fold output ./
• fold output ../ when possible
• collapse multiple slashes
• delete trailing slashes (unless the path is just "/")

These heuristics do not always match the behavior of the filesystem. In particular, consider the path a/../b, which simplifyPath will change to b. If a is a symlink to x, a/../b may refer to a sibling of x, rather than the sibling of a referred to by b.

Parameters:

pathname -

Returns:

Since:

11.0

getFileExtension

public static String getFileExtension(String fullName)

Note: copied from Google Guava under Apache License v2. Returns the file extension for the given file name, or the empty string if the file has no extension. The result does not include the '.'.

Parameters:

fullName -

Returns:

Since:

11.0

getNameWithoutExtension

public static String getNameWithoutExtension(String file)

Note: copied from Google Guava under Apache License v2. Returns the file name without its file extension or path. This is similar to the basename unix command. The result does not include the '.'.

Parameters:

file - The name of the file to trim the extension from. This can be either a fully qualified file name (including a path) or just a file name.

Returns:

The file name without its path or extension.

Since:

14.0

newFileOutputStream

public static FileOutputStream newFileOutputStream(File file)
                                            throws UncheckedIOException

Parameters:

file -

Returns:

Throws:

UncheckedIOException

newFileInputStream

public static FileInputStream newFileInputStream(File file)
                                          throws UncheckedIOException

Parameters:

file -

Returns:

Throws:

UncheckedIOException

newFileOutputStream

public static FileOutputStream newFileOutputStream(String name)
                                            throws UncheckedIOException

Parameters:

name -

Returns:

Throws:

UncheckedIOException

newFileReader

public static FileReader newFileReader(File file)
                                throws UncheckedIOException

Parameters:

file -

Returns:

Throws:

UncheckedIOException

newFileReader

public static FileReader newFileReader(File file,
 Charset charset)
                                throws UncheckedIOException

Parameters:

file -

charset -

Returns:

Throws:

UncheckedIOException

newFileWriter

public static FileWriter newFileWriter(File file)
                                throws UncheckedIOException

Parameters:

file -

Returns:

Throws:

UncheckedIOException

newFileWriter

public static FileWriter newFileWriter(File file,
 Charset charset)
                                throws UncheckedIOException

Parameters:

file -

charset -

Returns:

Throws:

UncheckedIOException

newBufferedReader

public static BufferedReader newBufferedReader(File file)
                                        throws UncheckedIOException

New buffered reader.

Parameters:

file -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

newBufferedReader

public static BufferedReader newBufferedReader(File file,
 Charset charset)
                                        throws UncheckedIOException

New buffered reader.

Parameters:

file -

charset -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

newBufferedReader

public static BufferedReader newBufferedReader(Path path)
                                        throws UncheckedIOException

New buffered reader.

Parameters:

path -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

newBufferedReader

public static BufferedReader newBufferedReader(Path path,
 Charset charset)
                                        throws UncheckedIOException

New buffered reader.

Parameters:

path -

charset -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

newBufferedReader

public static BufferedReader newBufferedReader(InputStream is)
                                        throws UncheckedIOException

New buffered reader.

Parameters:

is -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

newBufferedReader

public static BufferedReader newBufferedReader(InputStream is,
 Charset charset)
                                        throws UncheckedIOException

New buffered reader.

Parameters:

is -

charset -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

newBufferedWriter

public static BufferedWriter newBufferedWriter(File file)
                                        throws UncheckedIOException

New buffered writer.

Parameters:

file -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

newBufferedWriter

public static BufferedWriter newBufferedWriter(File file,
 Charset charset)
                                        throws UncheckedIOException

New buffered writer.

Parameters:

file -

charset -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

newBufferedWriter

public static BufferedWriter newBufferedWriter(OutputStream os)

New buffered writer.

Parameters:

os -

Returns:

newBufferedWriter

public static BufferedWriter newBufferedWriter(OutputStream os,
 Charset charset)

New buffered writer.

Parameters:

os -

charset -

Returns:

newLZ4BlockInputStream

public static LZ4BlockInputStream newLZ4BlockInputStream(InputStream is)

New LZ 4 block input stream.

Parameters:

is -

Returns:

newLZ4BlockOutputStream

public static LZ4BlockOutputStream newLZ4BlockOutputStream(OutputStream os)

New LZ 4 block output stream.

Parameters:

os -

Returns:

newLZ4BlockOutputStream

public static LZ4BlockOutputStream newLZ4BlockOutputStream(OutputStream os,
 int blockSize)

Creates a new input stream with the specified buffer size.

Parameters:

os -

blockSize -

Returns:

newSnappyInputStream

public static SnappyInputStream newSnappyInputStream(InputStream is)
                                              throws UncheckedIOException

New snappy input stream.

Parameters:

is -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

newSnappyOutputStream

public static SnappyOutputStream newSnappyOutputStream(OutputStream os)

New snappy output stream.

Parameters:

os -

Returns:

newSnappyOutputStream

public static SnappyOutputStream newSnappyOutputStream(OutputStream os,
 int bufferSize)

Creates a new input stream with the specified buffer size.

Parameters:

os -

bufferSize -

Returns:

newGZIPInputStream

public static GZIPInputStream newGZIPInputStream(InputStream is)
                                          throws UncheckedIOException

New GZIP input stream.

Parameters:

is -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

newGZIPInputStream

public static GZIPInputStream newGZIPInputStream(InputStream is,
 int bufferSize)
                                          throws UncheckedIOException

Creates a new input stream with the specified buffer size.

Parameters:

is -

bufferSize -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

newGZIPOutputStream

public static GZIPOutputStream newGZIPOutputStream(OutputStream os)
                                            throws UncheckedIOException

New GZIP output stream.

Parameters:

os -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

newGZIPOutputStream

public static GZIPOutputStream newGZIPOutputStream(OutputStream os,
 int bufferSize)
                                            throws UncheckedIOException

Creates a new input stream with the specified buffer size.

Parameters:

os -

bufferSize -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

newBrotliInputStream

public static BrotliInputStream newBrotliInputStream(InputStream is)
                                              throws UncheckedIOException

New GZIP input stream.

Parameters:

is -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

close

public static void close(AutoCloseable closeable)

Parameters:

closeable -

closeAll

@SafeVarargs
public static void closeAll(AutoCloseable... a)

Parameters:

a -

closeAll

public static void closeAll(Collection<? extends AutoCloseable> c)

Parameters:

c -

closeQuietly

public static void closeQuietly(AutoCloseable closeable)

Parameters:

closeable -

closeAllQuietly

@SafeVarargs
public static void closeAllQuietly(AutoCloseable... a)

Close all quietly.

Parameters:

a -

closeAllQuietly

public static void closeAllQuietly(Collection<? extends AutoCloseable> c)

Close all quietly.

Parameters:

c -

copyFileToDirectory

public static void copyFileToDirectory(File srcFile,
 File destDir)
                                throws UncheckedIOException

Parameters:

srcFile -

destDir -

Throws:

UncheckedIOException - the unchecked IO exception

copyFileToDirectory

public static void copyFileToDirectory(File srcFile,
 File destDir,
 boolean preserveFileDate)
                                throws UncheckedIOException

Parameters:

srcFile -

destDir -

preserveFileDate -

Throws:

UncheckedIOException - the unchecked IO exception

copyFileToDirectory

public static <E extends Exception> void copyFileToDirectory(File srcFile,
 File destDir,
 boolean preserveFileDate,
 Throwables.BiPredicate<? super File,? super File,E> filter)
                                                      throws UncheckedIOException,
E

Copy the specified scrFile if it's a file or its sub files/directories if it's a directory to the target destDir with the specified filter.

Type Parameters:

E -

Parameters:

srcFile -

destDir -

preserveFileDate -

filter -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

copy

@SafeVarargs
public static Path copy(Path source,
 Path target,
 CopyOption... options)
                 throws UncheckedIOException

Parameters:

source -

target -

options -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

See Also:

• Files.copy(Path, Path, CopyOption...)

copy

@SafeVarargs
public static long copy(InputStream in,
 Path target,
 CopyOption... options)
                 throws UncheckedIOException

Parameters:

in -

target -

options -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

See Also:

• Files.copy(InputStream, Path, CopyOption...)

copy

public static long copy(Path source,
 OutputStream output)
                 throws UncheckedIOException

Parameters:

source -

output -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

See Also:

• Files.copy(Path, OutputStream)

copyURLToFile

public static void copyURLToFile(URL source,
 File destination)
                          throws UncheckedIOException

Copies bytes from the URL source to a file destination. The directories up to destination will be created if they don't already exist. destination will be overwritten if it already exists.

Warning: this method does not set a connection or read timeout and thus might block forever. Use copyURLToFile(URL, File, int, int) with reasonable timeouts to prevent this.

Parameters:

source - the URL to copy bytes from, must not be null

destination - the non-directory File to write bytes to (possibly overwriting), must not be null

Throws:

UncheckedIOException - if an IO error occurs during copying

copyURLToFile

public static void copyURLToFile(URL source,
 File destination,
 int connectionTimeout,
 int readTimeout)
                          throws UncheckedIOException

Copies bytes from the URL source to a file destination. The directories up to destination will be created if they don't already exist. destination will be overwritten if it already exists.

Parameters:

source - the URL to copy bytes from, must not be null

destination - the non-directory File to write bytes to (possibly overwriting), must not be null

connectionTimeout - the number of milliseconds until this method will timeout if no connection could be established to the source

readTimeout - the number of milliseconds until this method will timeout if no data could be read from the source

Throws:

UncheckedIOException - if an IO error occurs during copying

move

public static void move(File srcFile,
 File destDir)
                 throws UncheckedIOException

Parameters:

srcFile -

destDir -

Throws:

UncheckedIOException - the unchecked IO exception

renameTo

public static boolean renameTo(File srcFile,
 String newFileName)

Parameters:

srcFile -

newFileName -

Returns:

true if and only if the renaming succeeded; false otherwise

deleteIfExists

public static boolean deleteIfExists(File file)

Delete the specified file (or directory).

Parameters:

file -

Returns:

true if the file is deleted successfully, otherwise false if the file is null or doesn't exist, or can't be deleted.

See Also:

• Files.delete(Path)
• Files.deleteIfExists(Path)

deleteAllIfExists

public static boolean deleteAllIfExists(File file)

Delete the specified file and all its sub files/directories if it's a directory.

Parameters:

file -

Returns:

true if the file is deleted successfully, otherwise false if the file is null or doesn't exist, or can't be deleted.

See Also:

• Files.delete(Path)
• Files.deleteIfExists(Path)

deleteFiles

public static boolean deleteFiles(File dir)

Parameters:

dir -

Returns:

false if the file or some of its sub files if it's directory can't be deleted.

deleteFiles

public static <E extends Exception> boolean deleteFiles(File dir,
 Throwables.BiPredicate<? super File,? super File,E> filter)
                                                 throws E

Delete the specified dir if it's a file or its sub files/directories if it's a directory with the specified filter.

Type Parameters:

E -

Parameters:

dir -

filter -

Returns:

false if the file or some of its sub files if it's directory can't be deleted.

Throws:

E - the e

See Also:

• Files.delete(Path)
• Files.deleteIfExists(Path)

cleanDirectory

public static boolean cleanDirectory(File directory)

Cleans a directory without deleting it.

Parameters:

directory - directory to clean

Returns:

false if some of its sub files can't be deleted.

See Also:

• deleteFiles(java.io.File)

createIfNotExists

public static boolean createIfNotExists(File file)
                                 throws UncheckedIOException

Creates the if not exists.

Parameters:

file -

Returns:

false if file exists or failed to create new file.

Throws:

UncheckedIOException - the unchecked IO exception

mkdirIfNotExists

public static boolean mkdirIfNotExists(File dir)

Parameters:

dir -

Returns:

mkdirsIfNotExists

public static boolean mkdirsIfNotExists(File dir)

Parameters:

dir -

Returns:

isFileNewer

public static boolean isFileNewer(File file,
 Date date)

Tests if the specified File is newer than the specified Date.

Parameters:

file - the File of which the modification date must be compared

date - the date reference

Returns:

true if the File exists and has been modified after the given Date.

Throws:

IllegalArgumentException - if the file or date is null

isFileNewer

public static boolean isFileNewer(File file,
 File reference)

Tests if the specified File is newer than the reference File.

Parameters:

file - the File of which the modification date must be compared

reference - the File of which the modification date is used

Returns:

true if the File exists and has been modified more recently than the reference File

Throws:

IllegalArgumentException - if the file or reference file is null or the reference file doesn't exist

isFileOlder

public static boolean isFileOlder(File file,
 Date date)

Tests if the specified File is older than the specified Date.

Parameters:

file - the File of which the modification date must be compared

date - the date reference

Returns:

true if the File exists and has been modified before the given Date

Throws:

IllegalArgumentException - if the file or date is null

isFileOlder

public static boolean isFileOlder(File file,
 File reference)

Tests if the specified File is older than the reference File.

Parameters:

file - the File of which the modification date must be compared

reference - the File of which the modification date is used

Returns:

true if the File exists and has been modified before the reference File

Throws:

IllegalArgumentException - if the file or reference file is null or the reference file doesn't exist

isSymbolicLink

public static boolean isSymbolicLink(File file)

Determines whether the specified file is a Symbolic Link rather than an actual file.

Will not return true if there is a Symbolic Link anywhere in the path, only if the specific file is.

When using jdk1.7, this method delegates to boolean java.nio.file.Files.isSymbolicLink(Path path)

Note: the current implementation always returns false if running on jkd1.6 and the system is detected as Windows using FilenameUtil#isSystemWindows()

For code that runs on Java 1.7 or later, use the following method instead:

boolean java.nio.file.Files.isSymbolicLink(Path path)

Parameters:

file - the file to check

Returns:

true if the file is a Symbolic Link

Since:

2.0

sizeOf

public static long sizeOf(File file)

Returns the size of the specified file or directory. If the provided File is a regular file, then the file's length is returned. If the argument is a directory, then the size of the directory is calculated recursively. If a directory or subdirectory is security restricted, its size will not be included.

Note that overflow is not detected, and the return value may be negative if overflow occurs. See #sizeOfAsBigInteger(File) for an alternative method that does not overflow.

Parameters:

file - the regular file or directory to return the size of (must not be null).

Returns:

the length of the file, or recursive size of the directory, provided (in bytes).

Throws:

IllegalArgumentException - if the file is null or the file does not exist.

Since:

2.0

sizeOfDirectory

public static long sizeOfDirectory(File directory)

Counts the size of a directory recursively (sum of the length of all files).

Note that overflow is not detected, and the return value may be negative if overflow occurs. See #sizeOfDirectoryAsBigInteger(File) for an alternative method that does not overflow.

Parameters:

directory - directory to inspect, must not be null

Returns:

size of directory in bytes, 0 if directory is security restricted, a negative number when the real total is greater than Long.MAX_VALUE.

Throws:

IllegalArgumentException - if the directory is null or it's not existed directory.

zip

public static void zip(File sourceFile,
 File targetFile)
                throws UncheckedIOException

Parameters:

sourceFile -

targetFile -

Throws:

UncheckedIOException - the unchecked IO exception

zip

public static void zip(Collection<File> sourceFiles,
 File targetFile)
                throws UncheckedIOException

Parameters:

sourceFiles -

targetFile -

Throws:

UncheckedIOException - the unchecked IO exception

unzip

public static void unzip(File srcZipFile,
 File targetDir)

Parameters:

srcZipFile -

targetDir -

split

public static void split(File file,
 int countOfParts)
                  throws UncheckedIOException

Parameters:

file -

countOfParts -

Throws:

UncheckedIOException - the unchecked IO exception

split

public static void split(File file,
 int countOfParts,
 File destDir)
                  throws UncheckedIOException

Parameters:

file -

countOfParts -

destDir -

Throws:

UncheckedIOException - the unchecked IO exception

splitBySize

public static void splitBySize(File file,
 long sizeOfPart)
                        throws UncheckedIOException

Split by size.

Parameters:

file -

sizeOfPart -

Throws:

UncheckedIOException - the unchecked IO exception

splitBySize

public static void splitBySize(File file,
 long sizeOfPart,
 File destDir)
                        throws UncheckedIOException

Mostly it's designed for (zipped/unzipped/log) text files.

Parameters:

file -

sizeOfPart -

destDir -

Throws:

UncheckedIOException - the unchecked IO exception

merge

public static long merge(File[] sourceFiles,
 File destFile)
                  throws UncheckedIOException

Parameters:

sourceFiles -

destFile -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

merge

public static long merge(Collection<File> sourceFiles,
 File destFile)
                  throws UncheckedIOException

Merge the specified source files into the destination file.

Parameters:

sourceFiles -

destFile -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

list

public static List<String> list(File parentPath)

Parameters:

parentPath -

Returns:

list

public static List<String> list(File parentPath,
 boolean recursively,
 boolean excludeDirectory)

Parameters:

parentPath -

recursively -

excludeDirectory -

Returns:

list

public static <E extends Exception> List<String> list(File parentPath,
 boolean recursively,
 Throwables.BiPredicate<? super File,? super File,E> filter)
                                               throws E

Type Parameters:

E -

Parameters:

parentPath -

recursively -

filter -

Returns:

Throws:

E - the e

listFiles

public static List<File> listFiles(File parentPath)

Parameters:

parentPath -

Returns:

listFiles

public static List<File> listFiles(File parentPath,
 boolean recursively,
 boolean excludeDirectory)

Parameters:

parentPath -

recursively -

excludeDirectory -

Returns:

listFiles

public static <E extends Exception> List<File> listFiles(File parentPath,
 boolean recursively,
 Throwables.BiPredicate<? super File,? super File,E> filter)
                                                  throws E

Type Parameters:

E -

Parameters:

parentPath -

recursively -

filter -

Returns:

Throws:

E - the e

listDirectories

public static List<File> listDirectories(File parentPath)

Parameters:

parentPath -

Returns:

listDirectories

public static List<File> listDirectories(File parentPath,
 boolean recursively)

Parameters:

parentPath -

recursively -

Returns:

toFile

public static File toFile(URL url)

Convert from a URL to a File.

From version 1.1 this method will decode the URL. Syntax such as file:///my%20docs/file.txt will be correctly decoded to /my docs/file.txt. Starting with version 1.5, this method uses UTF-8 to decode percent-encoded octets to characters. Additionally, malformed percent-encoded octets are handled leniently by passing them through literally.

Parameters:

url - the file URL to convert, null returns null

Returns:

Throws:

NullPointerException - if the parameter is null

toFiles

public static File[] toFiles(URL[] urls)
                      throws UncheckedIOException

Converts each of an array of URL to a File.

Returns an array of the same size as the input. If the input is null, an empty array is returned. If the input contains null, the output array contains null at the same index.

This method will decode the URL. Syntax such as file:///my%20docs/file.txt will be correctly decoded to /my docs/file.txt.

Parameters:

urls - the file URLs to convert, null returns empty array

Returns:

a non-null array of Files matching the input, with a null item if there was a null at that index in the input array

Throws:

UncheckedIOException - the unchecked IO exception

IllegalArgumentException - if any file is incorrectly encoded

Since:

1.1

toFiles

public static List<File> toFiles(Collection<URL> urls)
                          throws UncheckedIOException

Parameters:

urls -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

toURL

public static URL toURL(File file)
                 throws UncheckedIOException

Parameters:

file -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

toURLs

public static URL[] toURLs(File[] files)
                    throws UncheckedIOException

To UR ls.

Parameters:

files -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

toURLs

public static List<URL> toURLs(Collection<File> files)
                        throws UncheckedIOException

To UR ls.

Parameters:

files -

Returns:

Throws:

UncheckedIOException - the unchecked IO exception

touch

public static boolean touch(File file)

Update the last modified time of the file to system current time if the specified file exists.

Parameters:

file - the File to touch

Returns:

true if the file exists and last modified time is updated successfully.

parse

public static <E extends Exception> void parse(File file,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

file -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(File file,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Type Parameters:

E -

E2 -

Parameters:

file -

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(File file,
 long lineOffset,
 long count,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

file -

lineOffset -

count -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(File file,
 long lineOffset,
 long count,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Type Parameters:

E -

E2 -

Parameters:

file -

lineOffset -

count -

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(File file,
 long lineOffset,
 long count,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

file -

lineOffset -

count -

processThreadNum -

queueSize -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(File file,
 long lineOffset,
 long count,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Parse the specified files/directory line by line.

Type Parameters:

E -

E2 -

Parameters:

file - parse all the sub files recursively if the element is a directory.

lineOffset -

count -

processThreadNum - new threads started to parse/process the lines/records

queueSize -

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(List<File> files,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

files -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(List<File> files,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Type Parameters:

E -

E2 -

Parameters:

files -

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(List<File> files,
 long lineOffset,
 long count,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

files -

lineOffset -

count -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(List<File> files,
 long lineOffset,
 long count,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Type Parameters:

E -

E2 -

Parameters:

files -

lineOffset -

count -

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(List<File> files,
 long lineOffset,
 long count,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

files -

lineOffset -

count -

processThreadNum -

queueSize -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(List<File> files,
 long lineOffset,
 long count,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Parse the specified files/directory line by line.

Type Parameters:

E -

E2 -

Parameters:

files - parse all the sub files recursively if the element is a directory.

lineOffset -

count -

processThreadNum - thread number used to parse/process the lines/records

queueSize - size of queue to save the processing records/lines loaded from source data. Default size is 1024.

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(File file,
 int readThreadNum,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

file -

readThreadNum -

processThreadNum -

queueSize -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(File file,
 int readThreadNum,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Type Parameters:

E -

E2 -

Parameters:

file -

readThreadNum -

processThreadNum -

queueSize -

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(File file,
 long lineOffset,
 long count,
 int readThreadNum,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

file -

lineOffset -

count -

readThreadNum -

processThreadNum -

queueSize -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(File file,
 long lineOffset,
 long count,
 int readThreadNum,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Parse the specified files/directory line by line.

Type Parameters:

E -

E2 -

Parameters:

file - parse all the sub files recursively if the element is a directory.

lineOffset -

count -

readThreadNum - new threads started to parse/process the lines/records

processThreadNum - new threads started to parse/process the lines/records

queueSize - size of queue to save the processing records/lines loaded from source data. Default size is 1024.

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(List<File> files,
 int readThreadNum,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

files -

readThreadNum -

processThreadNum -

queueSize -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(List<File> files,
 int readThreadNum,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Type Parameters:

E -

E2 -

Parameters:

files -

readThreadNum -

processThreadNum -

queueSize -

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(List<File> files,
 long lineOffset,
 long count,
 int readThreadNum,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

files -

lineOffset -

count -

readThreadNum -

processThreadNum -

queueSize -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(List<File> files,
 long lineOffset,
 long count,
 int readThreadNum,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Parse the specified files/directory line by line.

Type Parameters:

E -

E2 -

Parameters:

files - parse all the sub files recursively if the element is a directory.

lineOffset -

count -

readThreadNum - new threads started to parse/process the lines/records

processThreadNum - new threads started to parse/process the lines/records

queueSize - size of queue to save the processing records/lines loaded from source data. Default size is 1024.

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(InputStream is,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

is -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(InputStream is,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Type Parameters:

E -

E2 -

Parameters:

is -

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(InputStream is,
 long lineOffset,
 long count,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

is -

lineOffset -

count -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(InputStream is,
 long lineOffset,
 long count,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Type Parameters:

E -

E2 -

Parameters:

is -

lineOffset -

count -

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(InputStream is,
 long lineOffset,
 long count,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

is -

lineOffset -

count -

processThreadNum -

queueSize -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(InputStream is,
 long lineOffset,
 long count,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Parse the specified Reader line by line.

Type Parameters:

E -

E2 -

Parameters:

is -

lineOffset -

count -

processThreadNum - new threads started to parse/process the lines/records

queueSize - size of queue to save the processing records/lines loaded from source data. Default size is 1024.

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(Reader reader,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

reader -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(Reader reader,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Type Parameters:

E -

E2 -

Parameters:

reader -

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(Reader reader,
 long lineOffset,
 long count,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

reader -

lineOffset -

count -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(Reader reader,
 long lineOffset,
 long count,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Type Parameters:

E -

E2 -

Parameters:

reader -

lineOffset -

count -

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2

parse

public static <E extends Exception> void parse(Reader reader,
 long lineOffset,
 long count,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser)
                                        throws UncheckedIOException,
E

Type Parameters:

E -

Parameters:

reader -

lineOffset -

count -

processThreadNum -

queueSize -

lineParser -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

parse

public static <E extends Exception,
E2 extends Exception>
void parse(Reader reader,
 long lineOffset,
 long count,
 int processThreadNum,
 int queueSize,
 Throwables.Consumer<String,E> lineParser,
 Throwables.Runnable<E2> onComplete)
    throws UncheckedIOException,
E,
E2

Parse the specified Reader line by line.

Type Parameters:

E -

E2 -

Parameters:

reader -

lineOffset -

count -

processThreadNum - new threads started to parse/process the lines/records

queueSize - size of queue to save the processing records/lines loaded from source data. Default size is 1024.

lineParser -

onComplete -

Throws:

UncheckedIOException - the unchecked IO exception

E - the e

E2 - the e2