Package edu.umd.cs.findbugs.util

Class Util

java.lang.Object

edu.umd.cs.findbugs.util.Util

public class Util
extends Object

Author:

William Pugh

Constructor Summary

Constructors

Constructor	Description
Util()

Method Summary

Modifier and Type	Method	Description
static <K> List<K>	addTo(List<K> s, K k)
static <K> Set<K>	addTo(Set<K> s, K k)
static void	closeSilently(Closeable out)	Deprecated. Use try-with-resources instead.
static void	closeSilently(InputStream in)
static void	closeSilently(OutputStream out)	Deprecated. Use try-with-resources instead.
static void	closeSilently(Reader in)	Deprecated. Use try-with-resources instead.
static void	closeSilently(ZipFile zip)	Deprecated. Use try-with-resources instead.
static <T> Set<T>	emptyOrNonnullSingleton(T t)
static <E> E	first(Iterable<E> i)
static String	getFileExtension(File f)
static String	getFileExtensionIgnoringGz(File f)
static Reader	getFileReader(File filename)
static Reader	getFileReader(String filename)
static Writer	getFileWriter(String filename)
static MessageDigest	getMD5Digest()
static Reader	getReader(InputStream in)
static Writer	getWriter(OutputStream out)
static String	getXMLType(InputStream in)
static <K, V> Map<K,V>	immutableMap(Map<K,V> map)
static boolean	isPowerOfTwo(int i)
static <K> ArrayList<K>	makeSmallArrayList(List<K> m)
static <K, V> HashMap<K,V>	makeSmallHashMap(Map<K,V> m)
static <K> HashSet<K>	makeSmallHashSet(Collection<K> m)
static String	repeat(String s, int number)
static Thread	runInDameonThread(Runnable r)
static Thread	runInDameonThread(Runnable r, String name)
static void	runLogAtShutdown(Runnable r)
static Thread	startDameonThread(Thread t)

Methods inherited from class java.lang.Object

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

Constructor Details

Util

public Util()

Method Details

startDameonThread

public static Thread startDameonThread(Thread t)

runInDameonThread

public static Thread runInDameonThread(Runnable r,
 String name)

runInDameonThread

public static Thread runInDameonThread(Runnable r)

repeat

public static String repeat(String s,
 int number)

runLogAtShutdown

public static void runLogAtShutdown(Runnable r)

emptyOrNonnullSingleton

public static <T> Set<T> emptyOrNonnullSingleton(T t)

immutableMap

public static <K,
V> Map<K,V> immutableMap(Map<K,V> map)

getReader

public static Reader getReader(@WillCloseWhenClosed
 InputStream in)

getFileReader

public static Reader getFileReader(String filename)
                            throws FileNotFoundException

Throws:

FileNotFoundException

getFileReader

public static Reader getFileReader(File filename)
                            throws FileNotFoundException

Throws:

FileNotFoundException

getWriter

public static Writer getWriter(@WillCloseWhenClosed
 OutputStream out)

getFileWriter

public static Writer getFileWriter(String filename)
                            throws FileNotFoundException

Throws:

FileNotFoundException

closeSilently

public static void closeSilently(@WillClose
 InputStream in)

closeSilently

@Deprecated
public static void closeSilently(@WillClose
 Reader in)

Deprecated.

Use try-with-resources instead.

closeSilently

@Deprecated
public static void closeSilently(@WillClose
 OutputStream out)

Deprecated.

Use try-with-resources instead. And basically IOException from OutputStream.close() is not good to ignore.

closeSilently

@Deprecated
public static void closeSilently(@WillClose
 Closeable out)

Deprecated.

Use try-with-resources instead. And basically IOException from OutputStream.close() is not good to ignore.

closeSilently

@Deprecated
public static void closeSilently(@WillClose
 ZipFile zip)

Deprecated.

Use try-with-resources instead.

getXMLType

public static String getXMLType(@WillNotClose
 InputStream in)
                         throws IOException

Throws:

IOException

getFileExtension

public static String getFileExtension(File f)

getFileExtensionIgnoringGz

public static String getFileExtensionIgnoringGz(File f)

first

public static <E> E first(Iterable<E> i)

Parameters:

i - the Iterable whose first element is to be retrieved

Returns:

first element of iterable

makeSmallHashMap

public static <K,
V> HashMap<K,V> makeSmallHashMap(Map<K,V> m)

makeSmallHashSet

public static <K> HashSet<K> makeSmallHashSet(Collection<K> m)

makeSmallArrayList

public static <K> ArrayList<K> makeSmallArrayList(List<K> m)

addTo

public static <K> Set<K> addTo(Set<K> s,
 K k)

addTo

public static <K> List<K> addTo(List<K> s,
 K k)

getMD5Digest

@Nonnull
public static MessageDigest getMD5Digest()

isPowerOfTwo

public static boolean isPowerOfTwo(int i)