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)
static void	closeSilently(InputStream in)
static void	closeSilently(OutputStream out)
static void	closeSilently(Reader in)
static void	closeSilently(Connection c)
static void	closeSilently(PreparedStatement c)
static void	closeSilently(ResultSet c)
static void	closeSilently(ZipFile zip)
static String	commonPrefix(String s1, String s2)
static int	compare(int x, int y)	return sign of x - y
static int	compare(long x, long y)	return sign of x - y
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 String	getNetworkErrorMessage(Throwable e)
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 boolean	isPowerOfTwo(long i)
static IOException	makeIOException(String msg, Throwable cause)
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 <E> Set<E>	newSetFromMap(Map<E,Boolean> m)	Duplication 1.6 functionality of Collections.newSetFromMap
static <T extends Comparable<? super T>> int	nullSafeCompareTo(T o1, T o2)
static <T> boolean	nullSafeEquals(T o1, T o2)
static int	nullSafeHashcode(Object o)
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 Iterable<Integer>	setBitIteratable(BitSet b)
static Iterator<Integer>	setBitIterator(BitSet b)
static int	sign(int x)
static Thread	startDameonThread(Thread t)
static void	throwIOException(String msg, Throwable cause)

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)

sign

public static int sign(int x)

compare

public static int compare(int x,
 int y)

return sign of x - y

compare

public static int compare(long x,
 long y)

return sign of x - y

setBitIteratable

public static Iterable<Integer> setBitIteratable(BitSet b)

setBitIterator

public static Iterator<Integer> setBitIterator(BitSet b)

repeat

public static String repeat(String s,
 int number)

getNetworkErrorMessage

public static String getNetworkErrorMessage(Throwable e)

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)

nullSafeHashcode

public static int nullSafeHashcode(@CheckForNull
 Object o)

nullSafeEquals

public static <T> boolean nullSafeEquals(@CheckForNull
 T o1,
 @CheckForNull
 T o2)

nullSafeCompareTo

public static <T extends Comparable<? super T>> int nullSafeCompareTo(@CheckForNull
 T o1,
 @CheckForNull
 T o2)

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
 Connection c)

closeSilently

public static void closeSilently(@WillClose
 PreparedStatement c)

closeSilently

public static void closeSilently(@WillClose
 ResultSet c)

closeSilently

public static void closeSilently(@WillClose
 InputStream in)

closeSilently

public static void closeSilently(@WillClose
 Reader in)

closeSilently

public static void closeSilently(@WillClose
 OutputStream out)

closeSilently

public static void closeSilently(@WillClose
 Closeable out)

closeSilently

public static void closeSilently(@WillClose
 ZipFile zip)

getXMLType

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

Throws:

IOException

makeIOException

public static IOException makeIOException(String msg,
 Throwable cause)

getFileExtension

public static String getFileExtension(File f)

getFileExtensionIgnoringGz

public static String getFileExtensionIgnoringGz(File f)

throwIOException

public static void throwIOException(String msg,
 Throwable cause)
                             throws IOException

Throws:

IOException

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

commonPrefix

public static String commonPrefix(String s1,
 String s2)

newSetFromMap

public static <E> Set<E> newSetFromMap(Map<E,Boolean> m)

Duplication 1.6 functionality of Collections.newSetFromMap

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)

isPowerOfTwo

public static boolean isPowerOfTwo(long i)