edu.umd.cs.findbugs.util

Class Util

java.lang.Object

edu.umd.cs.findbugs.util.Util

public class Util
extends java.lang.Object

Author:

William Pugh

Constructor Summary

Constructors

Constructor and Description
Util()

Method Summary

Modifier and Type	Method and Description
static <K> java.util.List<K>	addTo(java.util.List<K> s, K k)
static <K> java.util.Set<K>	addTo(java.util.Set<K> s, K k)
static void	closeSilently(java.io.Closeable out) Deprecated. Use try-with-resources instead. And basically IOException from OutputStream.close() is not good to ignore.
static void	closeSilently(java.sql.Connection c)
static void	closeSilently(java.io.InputStream in)
static void	closeSilently(java.io.OutputStream out) Deprecated. Use try-with-resources instead. And basically IOException from OutputStream.close() is not good to ignore.
static void	closeSilently(java.sql.PreparedStatement c)
static void	closeSilently(java.io.Reader in) Deprecated. Use try-with-resources instead.
static void	closeSilently(java.sql.ResultSet c)
static void	closeSilently(java.util.zip.ZipFile zip) Deprecated. Use try-with-resources instead.
static java.lang.String	commonPrefix(java.lang.String s1, java.lang.String s2)
static int	compare(int x, int y) Deprecated. use Integer.compare(int, int) instead.
static int	compare(long x, long y) Deprecated. use Long.compare(long, long) instead.
static <T> java.util.Set<T>	emptyOrNonnullSingleton(T t)
static <E> E	first(java.lang.Iterable<E> i)
static java.lang.String	getFileExtension(java.io.File f)
static java.lang.String	getFileExtensionIgnoringGz(java.io.File f)
static java.io.Reader	getFileReader(java.io.File filename)
static java.io.Reader	getFileReader(java.lang.String filename)
static java.io.Writer	getFileWriter(java.lang.String filename)
static java.security.MessageDigest	getMD5Digest()
static java.lang.String	getNetworkErrorMessage(java.lang.Throwable e)
static java.io.Reader	getReader(java.io.InputStream in)
static java.io.Writer	getWriter(java.io.OutputStream out)
static java.lang.String	getXMLType(java.io.InputStream in)
static <K,V> java.util.Map<K,V>	immutableMap(java.util.Map<K,V> map)
static boolean	isPowerOfTwo(int i)
static boolean	isPowerOfTwo(long i)
static java.io.IOException	makeIOException(java.lang.String msg, java.lang.Throwable cause)
static <K> java.util.ArrayList<K>	makeSmallArrayList(java.util.List<K> m)
static <K,V> java.util.HashMap<K,V>	makeSmallHashMap(java.util.Map<K,V> m)
static <K> java.util.HashSet<K>	makeSmallHashSet(java.util.Collection<K> m)
static <E> java.util.Set<E>	newSetFromMap(java.util.Map<E,java.lang.Boolean> m) Duplication 1.6 functionality of Collections.newSetFromMap
static <T extends java.lang.Comparable<? super T>> int	nullSafeCompareTo(T o1, T o2)
static <T> boolean	nullSafeEquals(T o1, T o2) Deprecated. use Objects.equals(Object, Object) instead.
static int	nullSafeHashcode(java.lang.Object o) Deprecated. use Objects.hashCode(Object) instead.
static java.lang.String	repeat(java.lang.String s, int number)
static java.lang.Thread	runInDameonThread(java.lang.Runnable r)
static java.lang.Thread	runInDameonThread(java.lang.Runnable r, java.lang.String name)
static void	runLogAtShutdown(java.lang.Runnable r)
static java.lang.Iterable<java.lang.Integer>	setBitIteratable(java.util.BitSet b)
static java.util.Iterator<java.lang.Integer>	setBitIterator(java.util.BitSet b)
static int	sign(int x) Deprecated. use Integer.signum(int) instead.
static java.lang.Thread	startDameonThread(java.lang.Thread t)
static void	throwIOException(java.lang.String msg, java.lang.Throwable cause)

Methods inherited from class java.lang.Object

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

Constructor Detail

Util

public Util()

Method Detail

startDameonThread

public static java.lang.Thread startDameonThread(java.lang.Thread t)

runInDameonThread

public static java.lang.Thread runInDameonThread(java.lang.Runnable r,
                                                 java.lang.String name)

runInDameonThread

public static java.lang.Thread runInDameonThread(java.lang.Runnable r)

sign

@Deprecated
public static int sign(int x)

Deprecated. use Integer.signum(int) instead.

compare

@Deprecated
public static int compare(int x,
                                      int y)

Deprecated. use Integer.compare(int, int) instead.

return sign of x - y

compare

@Deprecated
public static int compare(long x,
                                      long y)

Deprecated. use Long.compare(long, long) instead.

return sign of x - y

setBitIteratable

public static java.lang.Iterable<java.lang.Integer> setBitIteratable(java.util.BitSet b)

setBitIterator

public static java.util.Iterator<java.lang.Integer> setBitIterator(java.util.BitSet b)

repeat

public static java.lang.String repeat(java.lang.String s,
                                      int number)

getNetworkErrorMessage

public static java.lang.String getNetworkErrorMessage(java.lang.Throwable e)

runLogAtShutdown

public static void runLogAtShutdown(java.lang.Runnable r)

emptyOrNonnullSingleton

public static <T> java.util.Set<T> emptyOrNonnullSingleton(T t)

immutableMap

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

nullSafeHashcode

@Deprecated
public static int nullSafeHashcode(@CheckForNull
                                               java.lang.Object o)

Deprecated. use Objects.hashCode(Object) instead.

nullSafeEquals

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

Deprecated. use Objects.equals(Object, Object) instead.

nullSafeCompareTo

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

getReader

public static java.io.Reader getReader(@WillCloseWhenClosed
                                       java.io.InputStream in)

getFileReader

public static java.io.Reader getFileReader(java.lang.String filename)
                                    throws java.io.FileNotFoundException

Throws:

java.io.FileNotFoundException

getFileReader

public static java.io.Reader getFileReader(java.io.File filename)
                                    throws java.io.FileNotFoundException

Throws:

java.io.FileNotFoundException

getWriter

public static java.io.Writer getWriter(@WillCloseWhenClosed
                                       java.io.OutputStream out)

getFileWriter

public static java.io.Writer getFileWriter(java.lang.String filename)
                                    throws java.io.FileNotFoundException

Throws:

java.io.FileNotFoundException

closeSilently

public static void closeSilently(@WillClose
                                 java.sql.Connection c)

closeSilently

public static void closeSilently(@WillClose
                                 java.sql.PreparedStatement c)

closeSilently

public static void closeSilently(@WillClose
                                 java.sql.ResultSet c)

closeSilently

public static void closeSilently(@WillClose
                                 java.io.InputStream in)

closeSilently

@Deprecated
public static void closeSilently(@WillClose
                                             java.io.Reader in)

Deprecated. Use try-with-resources instead.

closeSilently

@Deprecated
public static void closeSilently(@WillClose
                                             java.io.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
                                             java.io.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
                                             java.util.zip.ZipFile zip)

Deprecated. Use try-with-resources instead.

getXMLType

public static java.lang.String getXMLType(@WillNotClose
                                          java.io.InputStream in)
                                   throws java.io.IOException

Throws:

java.io.IOException

makeIOException

public static java.io.IOException makeIOException(java.lang.String msg,
                                                  java.lang.Throwable cause)

getFileExtension

public static java.lang.String getFileExtension(java.io.File f)

getFileExtensionIgnoringGz

public static java.lang.String getFileExtensionIgnoringGz(java.io.File f)

throwIOException

public static void throwIOException(java.lang.String msg,
                                    java.lang.Throwable cause)
                             throws java.io.IOException

Throws:

java.io.IOException

first

public static <E> E first(java.lang.Iterable<E> i)

Parameters:

i - the Iterable whose first element is to be retrieved

Returns:

first element of iterable

commonPrefix

public static java.lang.String commonPrefix(java.lang.String s1,
                                            java.lang.String s2)

newSetFromMap

public static <E> java.util.Set<E> newSetFromMap(java.util.Map<E,java.lang.Boolean> m)

Duplication 1.6 functionality of Collections.newSetFromMap

makeSmallHashMap

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

makeSmallHashSet

public static <K> java.util.HashSet<K> makeSmallHashSet(java.util.Collection<K> m)

makeSmallArrayList

public static <K> java.util.ArrayList<K> makeSmallArrayList(java.util.List<K> m)

addTo

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

addTo

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

getMD5Digest

@Nonnull
public static java.security.MessageDigest getMD5Digest()

isPowerOfTwo

public static boolean isPowerOfTwo(int i)

isPowerOfTwo

public static boolean isPowerOfTwo(long i)