Package cn.nukkit.nbt.stream

Class BufferedRandomAccessFile

java.lang.Object

java.io.RandomAccessFile

cn.nukkit.nbt.stream.BufferedRandomAccessFile

All Implemented Interfaces:

Closeable, DataInput, DataOutput, AutoCloseable

public class BufferedRandomAccessFile
extends RandomAccessFile

A BufferedRandomAccessFile is like a RandomAccessFile, but it uses a private buffer so that most operations do not require a disk access.

Note: The operations on this class are unmonitored. Also, the correct functioning of the RandomAccessFile methods that are not overridden here relies on the implementation of those methods in the superclass.

Author:

Avinash Lakshman ( [email protected]) & Prashant Malik ( [email protected] )

Field Summary

Fields

Modifier and Type	Field	Description
static final int	BuffSz_

Constructor Summary

Constructors

Constructor	Description
BufferedRandomAccessFile(File file, String mode)	Open a new BufferedRandomAccessFile on file in mode mode, which should be "r" for reading only, or "rw" for reading and writing.
BufferedRandomAccessFile(File file, String mode, int size)
BufferedRandomAccessFile(String name, String mode)	Open a new BufferedRandomAccessFile on the file named name in mode mode, which should be "r" for reading only, or "rw" for reading and writing.
BufferedRandomAccessFile(String name, String mode, int size)

Method Summary

Modifier and Type	Method	Description
void	close()
void	flush()	Flush any bytes in the file's buffer that have not yet been written to disk.
long	getFilePointer()
long	length()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len)
byte	read1()
byte	readCurrent()
void	seek(long pos)
void	seekUnsafe(long pos)
void	write(byte[] b)
void	write(byte[] b, int off, int len)
void	write(int b)
void	writeCurrent(byte b)

Methods inherited from class java.io.RandomAccessFile

getChannel, getFD, readBoolean, readByte, readChar, readDouble, readFloat, readFully, readFully, readInt, readLine, readLong, readShort, readUnsignedByte, readUnsignedShort, readUTF, setLength, skipBytes, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeDouble, writeFloat, writeInt, writeLong, writeShort, writeUTF

Methods inherited from class java.lang.Object

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

Field Details

BuffSz_

public static final int BuffSz_

See Also:

• Constant Field Values

Constructor Details

BufferedRandomAccessFile

public BufferedRandomAccessFile(File file,
 String mode)
                         throws IOException

Open a new BufferedRandomAccessFile on file in mode mode, which should be "r" for reading only, or "rw" for reading and writing.

Throws:

IOException

BufferedRandomAccessFile

public BufferedRandomAccessFile(File file,
 String mode,
 int size)
                         throws IOException

Throws:

IOException

BufferedRandomAccessFile

public BufferedRandomAccessFile(String name,
 String mode)
                         throws IOException

Open a new BufferedRandomAccessFile on the file named name in mode mode, which should be "r" for reading only, or "rw" for reading and writing.

Throws:

IOException

BufferedRandomAccessFile

public BufferedRandomAccessFile(String name,
 String mode,
 int size)
                         throws FileNotFoundException

Throws:

FileNotFoundException

Method Details

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class RandomAccessFile

Throws:

IOException

flush

public void flush()
           throws IOException

Flush any bytes in the file's buffer that have not yet been written to disk. If the file was created read-only, this method is a no-op.

Throws:

IOException

seek

public void seek(long pos)
          throws IOException

Overrides:

seek in class RandomAccessFile

Throws:

IOException

seekUnsafe

public void seekUnsafe(long pos)
                throws IOException

Throws:

IOException

getFilePointer

public long getFilePointer()

Overrides:

getFilePointer in class RandomAccessFile

length

public long length()
            throws IOException

Overrides:

length in class RandomAccessFile

Throws:

IOException

read

public int read()
         throws IOException

Overrides:

read in class RandomAccessFile

Throws:

IOException

read1

public byte read1()
           throws IOException

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class RandomAccessFile

Throws:

IOException

read

public int read(byte[] b,
 int off,
 int len)
         throws IOException

Overrides:

read in class RandomAccessFile

Throws:

IOException

readCurrent

public byte readCurrent()
                 throws IOException

Throws:

IOException

writeCurrent

public void writeCurrent(byte b)
                  throws IOException

Throws:

IOException

write

public void write(int b)
           throws IOException

Specified by:

write in interface DataOutput

Overrides:

write in class RandomAccessFile

Throws:

IOException

write

public void write(byte[] b)
           throws IOException

Specified by:

write in interface DataOutput

Overrides:

write in class RandomAccessFile

Throws:

IOException

write

public void write(byte[] b,
 int off,
 int len)
           throws IOException

Specified by:

write in interface DataOutput

Overrides:

write in class RandomAccessFile

Throws:

IOException