Module utilities

Package de.grogra.util

Class Utils

java.lang.Object

de.grogra.util.Utils

public final class Utils
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final boolean[]	BOOLEAN_0
static final byte[]	BYTE_0
static final char[]	CHAR_0
static PrintWriter	debug
static final int	DEBUG
static final double[]	DOUBLE_0
static final float[]	FLOAT_0
static final I18NBundle	I18N
static final int[]	INT_0
static final long[]	LONG_0
static final Object[]	OBJECT_0
static final short[]	SHORT_0
static final String[]	STRING_0

Method Summary

Modifier and Type	Method	Description
static boolean	contentEquals(CharSequence a, CharSequence b)
static int	decodeBase64(CharSequence in, int offset, int len, byte[] out)
static Object	decodeBase64(CharSequence in, int offset, int len, TypeLoader loader)
static void	dumpArray(Object array)
static void	dumpTree(TreeModel tree)
static void	encodeBase64(byte[] buf, int off, int len, StringBuffer out)
static void	encodeBase64(Object object, StringBuffer out)
static boolean	equal(Object o1, Object o2)
static String	escape(CharSequence s, String special)
static void	escapeForXML(StringBuffer b, int start)
static void	escapeForXML(StringBuffer b, int start, int end)
static final String	eval(String s, Map vars)
static Object	evaluate(String clsAndMember, Object[] args, ClassLoader loader)
static int	executeForcedlyAndUninterruptibly(Lockable resource, LockProtectedRunnable task, boolean write)
static int	executeForcedlyAndUninterruptibly(Lockable resource, LockProtectedRunnable task, Lock retained)
static URL	fileToURL(File file)
static String	firstToUpperCase(String s)
static void	flushHandlers(Logger logger)
static void	formatDateAndName(LogRecord log, StringBuffer buffer)
static String	formatMessage(String message, int width)	Wrap a String msg into an html message with the given width.
static int	fromHexDigit(int c)
static Object	get(I18NBundle bundle, String key, String type, Object defaultDescription)
static Object	get(Map a, Object key, Object defaultValue)
static Color	getApproximateColor(int rgb)
static boolean	getBoolean(Map a, Object key)
static boolean	getBoolean(Map a, Object key, boolean defaultValue)
static byte	getByte(Map a, Object key)
static byte	getByte(Map a, Object key, byte defaultValue)
static char	getChar(Map a, Object key)
static char	getChar(Map a, Object key, char defaultValue)
static String	getDisplayLoggerName(String logger)
static double	getDouble(Map a, Object key)
static double	getDouble(Map a, Object key, double defaultValue)
static float	getFloat(Map a, Object key)
static float	getFloat(Map a, Object key, float defaultValue)
static int	getInt(Map a, Object key)
static int	getInt(Map a, Object key, int defaultValue)
static long	getLong(Map a, Object key)
static long	getLong(Map a, Object key, long defaultValue)
static Throwable	getMainException(Throwable t)
static Object	getObject(Map a, Object key)
static Object	getObject(Map a, Object key, Object defaultValue)
static short	getShort(Map a, Object key)
static short	getShort(Map a, Object key, short defaultValue)
static String	getStackTrace(Throwable t)
static InputStream	getStreamResource(String url)
static int	getStringHashCode(CharSequence c)
static int	getStringHashCode(CharSequence c, int begin, int end)
static URL	getURLResource(String url)
static Throwable	getUserException(Throwable t)
static int	hashCode(Object[] array)
static boolean	hasNanoTimeMethod()
static int	indexOfOne(int i)
static Throwable	initCauses(Throwable t)
static Object	invoke(String clsAndMethod, Object[] args, ClassLoader loader)
static Object	invokeStatic(Class cls, String method, Object[] args)
static Object	invokeStatic(String cls, String method, Object[] args, ClassLoader loader)
static Object	invokeVirtual(Object instance, String method, Object[] args)
static boolean	isContained(Object value, Object[] array)
static boolean	isStringDescription(String type)
static boolean	isURL(String systemId)
static long	nanoTime()
static Object	newInstance(Class cls, Object[] args)
static Object	newInstance(String cls, Object[] args, ClassLoader loader)
static SAXException	newSAXException(Exception cause)
static Color	parseColor(String s)
static Dimension	parseDimension(String s)
static int	parseFloatArray(String s, float[] a, String delim)
static Point	parsePoint(String s)
static Rectangle	parseRectangle(String s)
static Object[]	pathToArray(String p)
static Object[]	pathToArray(Path p)	Turn a Path into an array (/path1/dir2/file.txt) > [path1, dir2, file.txt] path1, dir2, file.txt being strings
static void	printTime(String msg)
static String	quote(CharSequence s)
static void	quote(CharSequence s, StringBuffer out)
static void	read(Reader in, StringBuffer out)
static void	readFully(InputStream in, byte[] buf)
static void	readFully(InputStream in, byte[] buf, int off, int len)
static File	relativize(File base, File f)
static void	resetTime()
static File	resolve(File base, File f)
static void	rethrow(Throwable t)
static void	setDisplayLoggerName(String logger, String name)
static char	toHexDigit(int digit, boolean upperCase)
static String	unquote(CharSequence s)
static String	unquote(CharSequence s, int start, int end, int[] endOut)
static Throwable	unwrap(Throwable t)
static Throwable	unwrapFully(Throwable t)
static File	urlToFile(URL url)
static void	watchShutdown()

Methods inherited from class java.lang.Object

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

Field Details

DEBUG

public static final int DEBUG

See Also:

• Constant Field Values

I18N

public static final I18NBundle I18N

BOOLEAN_0

public static final boolean[] BOOLEAN_0

BYTE_0

public static final byte[] BYTE_0

SHORT_0

public static final short[] SHORT_0

CHAR_0

public static final char[] CHAR_0

INT_0

public static final int[] INT_0

LONG_0

public static final long[] LONG_0

FLOAT_0

public static final float[] FLOAT_0

DOUBLE_0

public static final double[] DOUBLE_0

OBJECT_0

public static final Object[] OBJECT_0

STRING_0

public static final String[] STRING_0

debug

public static PrintWriter debug

Method Details

nanoTime

public static long nanoTime()

hasNanoTimeMethod

public static boolean hasNanoTimeMethod()

getApproximateColor

public static Color getApproximateColor(int rgb)

indexOfOne

public static int indexOfOne(int i)

getURLResource

public static URL getURLResource(String url)

getStreamResource

public static InputStream getStreamResource(String url)

get

public static Object get(Map a,
 Object key,
 Object defaultValue)

getBoolean

public static boolean getBoolean(Map a,
 Object key)

getBoolean

public static boolean getBoolean(Map a,
 Object key,
 boolean defaultValue)

getByte

public static byte getByte(Map a,
 Object key)

getByte

public static byte getByte(Map a,
 Object key,
 byte defaultValue)

getShort

public static short getShort(Map a,
 Object key)

getShort

public static short getShort(Map a,
 Object key,
 short defaultValue)

getChar

public static char getChar(Map a,
 Object key)

getChar

public static char getChar(Map a,
 Object key,
 char defaultValue)

getInt

public static int getInt(Map a,
 Object key)

getInt

public static int getInt(Map a,
 Object key,
 int defaultValue)

getLong

public static long getLong(Map a,
 Object key)

getLong

public static long getLong(Map a,
 Object key,
 long defaultValue)

getFloat

public static float getFloat(Map a,
 Object key)

getFloat

public static float getFloat(Map a,
 Object key,
 float defaultValue)

getDouble

public static double getDouble(Map a,
 Object key)

getDouble

public static double getDouble(Map a,
 Object key,
 double defaultValue)

getObject

public static Object getObject(Map a,
 Object key)

getObject

public static Object getObject(Map a,
 Object key,
 Object defaultValue)

firstToUpperCase

public static String firstToUpperCase(String s)

equal

public static boolean equal(Object o1,
 Object o2)

contentEquals

public static boolean contentEquals(CharSequence a,
 CharSequence b)

getStringHashCode

public static int getStringHashCode(CharSequence c,
 int begin,
 int end)

getStringHashCode

public static int getStringHashCode(CharSequence c)

getUserException

public static Throwable getUserException(Throwable t)

unwrap

public static Throwable unwrap(Throwable t)

unwrapFully

public static Throwable unwrapFully(Throwable t)

getMainException

public static Throwable getMainException(Throwable t)

initCauses

public static Throwable initCauses(Throwable t)

getStackTrace

public static String getStackTrace(Throwable t)

evaluate

public static Object evaluate(String clsAndMember,
 Object[] args,
 ClassLoader loader)
                       throws ClassNotFoundException,
NoSuchMethodException,
NoSuchFieldException,
InstantiationException,
IllegalAccessException,
InvocationTargetException

Throws:

ClassNotFoundException

NoSuchMethodException

NoSuchFieldException

InstantiationException

IllegalAccessException

InvocationTargetException

invoke

public static Object invoke(String clsAndMethod,
 Object[] args,
 ClassLoader loader)
                     throws ClassNotFoundException,
NoSuchMethodException,
InstantiationException,
IllegalAccessException,
InvocationTargetException

Throws:

ClassNotFoundException

NoSuchMethodException

InstantiationException

IllegalAccessException

InvocationTargetException

invokeStatic

public static Object invokeStatic(String cls,
 String method,
 Object[] args,
 ClassLoader loader)
                           throws ClassNotFoundException,
NoSuchMethodException,
IllegalAccessException,
InvocationTargetException

Throws:

ClassNotFoundException

NoSuchMethodException

IllegalAccessException

InvocationTargetException

invokeStatic

public static Object invokeStatic(Class cls,
 String method,
 Object[] args)
                           throws NoSuchMethodException,
IllegalAccessException,
InvocationTargetException

Throws:

NoSuchMethodException

IllegalAccessException

InvocationTargetException

invokeVirtual

public static Object invokeVirtual(Object instance,
 String method,
 Object[] args)
                            throws NoSuchMethodException,
IllegalAccessException,
InvocationTargetException

Throws:

NoSuchMethodException

IllegalAccessException

InvocationTargetException

newInstance

public static Object newInstance(String cls,
 Object[] args,
 ClassLoader loader)
                          throws ClassNotFoundException,
NoSuchMethodException,
InstantiationException,
IllegalAccessException,
InvocationTargetException

Throws:

ClassNotFoundException

NoSuchMethodException

InstantiationException

IllegalAccessException

InvocationTargetException

newInstance

public static Object newInstance(Class cls,
 Object[] args)
                          throws NoSuchMethodException,
InstantiationException,
IllegalAccessException,
InvocationTargetException

Throws:

NoSuchMethodException

InstantiationException

IllegalAccessException

InvocationTargetException

newSAXException

public static SAXException newSAXException(Exception cause)

rethrow

public static void rethrow(Throwable t)

dumpArray

public static void dumpArray(Object array)

isContained

public static boolean isContained(Object value,
 Object[] array)

hashCode

public static int hashCode(Object[] array)

dumpTree

public static void dumpTree(TreeModel tree)

escape

public static String escape(CharSequence s,
 String special)

escapeForXML

public static void escapeForXML(StringBuffer b,
 int start)

escapeForXML

public static void escapeForXML(StringBuffer b,
 int start,
 int end)

pathToArray

public static Object[] pathToArray(Path p)

Turn a Path into an array (/path1/dir2/file.txt) > [path1, dir2, file.txt] path1, dir2, file.txt being strings

pathToArray

public static Object[] pathToArray(String p)

relativize

public static File relativize(File base,
 File f)

resolve

public static File resolve(File base,
 File f)

isURL

public static boolean isURL(String systemId)

fileToURL

public static URL fileToURL(File file)

urlToFile

public static File urlToFile(URL url)

quote

public static String quote(CharSequence s)

quote

public static void quote(CharSequence s,
 StringBuffer out)

unquote

public static String unquote(CharSequence s)

unquote

public static String unquote(CharSequence s,
 int start,
 int end,
 int[] endOut)

parseDimension

public static Dimension parseDimension(String s)

parsePoint

public static Point parsePoint(String s)

parseColor

public static Color parseColor(String s)

parseRectangle

public static Rectangle parseRectangle(String s)

parseFloatArray

public static int parseFloatArray(String s,
 float[] a,
 String delim)

watchShutdown

public static void watchShutdown()

isStringDescription

public static boolean isStringDescription(String type)

get

public static Object get(I18NBundle bundle,
 String key,
 String type,
 Object defaultDescription)

encodeBase64

public static void encodeBase64(byte[] buf,
 int off,
 int len,
 StringBuffer out)

decodeBase64

public static int decodeBase64(CharSequence in,
 int offset,
 int len,
 byte[] out)
                        throws IOException

Throws:

IOException

encodeBase64

public static void encodeBase64(Object object,
 StringBuffer out)
                         throws IOException

Throws:

IOException

decodeBase64

public static Object decodeBase64(CharSequence in,
 int offset,
 int len,
 TypeLoader loader)
                           throws IOException,
ClassNotFoundException

Throws:

IOException

ClassNotFoundException

readFully

public static void readFully(InputStream in,
 byte[] buf,
 int off,
 int len)
                      throws IOException

Throws:

IOException

readFully

public static void readFully(InputStream in,
 byte[] buf)
                      throws IOException

Throws:

IOException

read

public static void read(Reader in,
 StringBuffer out)
                 throws IOException

Throws:

IOException

eval

public static final String eval(String s,
 Map vars)

toHexDigit

public static char toHexDigit(int digit,
 boolean upperCase)

fromHexDigit

public static int fromHexDigit(int c)

resetTime

public static void resetTime()

printTime

public static void printTime(String msg)

flushHandlers

public static void flushHandlers(Logger logger)

formatMessage

public static String formatMessage(String message,
 int width)

Wrap a String msg into an html message with the given width. Ease the

Parameters:

message -

width -

Returns:

getDisplayLoggerName

public static String getDisplayLoggerName(String logger)

setDisplayLoggerName

public static void setDisplayLoggerName(String logger,
 String name)

formatDateAndName

public static void formatDateAndName(LogRecord log,
 StringBuffer buffer)

executeForcedlyAndUninterruptibly

public static int executeForcedlyAndUninterruptibly(Lockable resource,
 LockProtectedRunnable task,
 boolean write)

executeForcedlyAndUninterruptibly

public static int executeForcedlyAndUninterruptibly(Lockable resource,
 LockProtectedRunnable task,
 Lock retained)