java.lang.Object
- jadex.commons.SUtil

```
public class SUtil
extends java.lang.Object
```
This class provides several useful static util methods.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class SUtil.AccessiblePrintStream
An subclass of print stream to allow accessing the underlying stream.

Field Summary

Fields
Modifier and Type	Field	Description
`protected static java.io.File`	`appdir`	Application directory, current working dir under normal Java, special with Android.
`static java.nio.charset.Charset`	`ASCII`	ASCII charset.
`static java.lang.String[]`	`BYTE_UNITS`	Units for representing byte values.
`static java.text.DecimalFormat`	`BYTEFORMATTER1`	The byte formatter for one predecimal digit.
`static java.text.DecimalFormat`	`BYTEFORMATTER2`	The byte formatter for two predecimal digits.
`static java.text.DecimalFormat`	`BYTEFORMATTER3`	The byte formatter for three predecimal digits.
`static int`	`CONVERT_ALL`	Constant that indicates a conversion of all known characters.
`static int`	`CONVERT_ALL_EXCEPT_AMP`	Constant that indicates a conversion of all known characters except &.
`static int`	`CONVERT_NONE`	Constant that indicates a conversion of no characters.
`protected static java.util.concurrent.atomic.AtomicLong`	`convidcnt`	The counter for conversation ids.
`static long`	`DEFTIMEOUT`	Default timeout e.g.
`static long`	`DEFTIMEOUT_DEFAULT`
`static java.lang.Class[]`	`EMPTY_CLASS_ARRAY`	An empty class array.
`static java.util.Enumeration`	`EMPTY_ENUMERATION`	An empty enumeration.
`static java.lang.Object[]`	`EMPTY_OBJECT_ARRAY`	An empty class array.
`static java.lang.String[]`	`EMPTY_STRING_ARRAY`	An empty string array.
`static java.util.Random`	`FAST_RANDOM`	Access to non-secure fast random source.
`protected static LRU<java.lang.String,Tuple2<java.lang.Long,java.lang.String>>`	`HASHES`	LRU for hashes.
`protected static java.util.Map<java.lang.String,java.lang.String>`	`htmlwraps`	Mapping from single characters to encoded version for displaying on xml-style interfaces.
`protected static char[]`	`ID_CHARS`	Lookup table used for unique strings.
`static java.lang.String[]`	`ISO8601UTCFALLBACKS`	ISO8601 fallbacks assuming UTC.
`static java.lang.String[]`	`ISO8601ZONEDFALLBACKS`	ISO8601 fallbacks with included timezone.
`static java.nio.charset.Charset`	`ISO8859_1`	ISO-8859-1 charset.
`static java.lang.String`	`JADEXDIR`	Directory were jadex stores files generated during runtime, to be used for later runs.
`protected static LRU<java.lang.String,java.lang.Long>`	`LASTMODS`	LRU for directory modification dates.
`static java.lang.String`	`LF`	Line separator.
`static java.lang.String[]`	`macs`	Cached for speed.
`protected static java.util.Map<java.lang.String,java.lang.String>`	`MIMETYPES`	The mime types.
`protected static java.util.List<java.net.NetworkInterface>`	`NIS`	The cached network interfaces.
`protected static long`	`NISTIME`	The time of the last caching of network interfaces.
`static java.lang.String`	`NULL`	A Null value.
`protected static java.io.OutputStream`	`OUT_FOR_SYSTEM_IN`
`protected static IResultCommand<ResourceInfo,java.net.URLConnection>[]`	`RESOURCEINFO_MAPPERS`
`static java.lang.ThreadLocal<java.text.DateFormat>`	`SDF`	Simple date format.
`static java.lang.ThreadLocal<java.text.DateFormat>`	`SDF2`
`static java.lang.ThreadLocal<java.text.DateFormat>`	`SDF3`
`static java.security.SecureRandom`	`SECURE_RANDOM`	Access to secure random source.
`protected static java.lang.String`	`seps`	Holds the single characters.
`static java.nio.charset.Charset`	`UTF8`	UTF-8 charset.

Constructor Summary

Constructors
Constructor Description

SUtil()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`addSystemErrListener(IChangeListener listener)`	Add a listener to System.err.
`static void`	`addSystemOutListener(IChangeListener listener)`	Add a listener to System.out.
`static boolean`	`arrayContains(java.lang.Object array, java.lang.Object value)`	Check if an element is contained in an array.
`static boolean`	`arrayEmptyOrNull(java.lang.Object array)`	Test if two arrays are content equal or both null.
`static boolean`	`arrayEquals(java.lang.Object array1, java.lang.Object array2)`	Test if two arrays are content equal or both null.
`static int`	`arrayHashCode(java.lang.Object a)`	Calculate a hash code for an array.
`static <T> java.util.List<T>`	`arrayToList(java.lang.Object a)`	Transform an array to a vector.
`static <T> java.util.Set<T>`	`arrayToSet(java.lang.Object a)`	Transform an array to a vector.
`static java.lang.String`	`arrayToString(java.lang.Object array)`	Get a string representation for an array.
`static byte[]`	`base16Decode(java.lang.String data)`	Decodes a Base16-encoded String and returns the data.
`static java.lang.String`	`base16Encode(byte[] data)`	Encodes a set of data as a Base16 String (hex).
`static int`	`bytesToInt(byte[] buffer)`	Convert bytes to an integer.
`static int`	`bytesToInt(byte[] buffer, int offset)`	Convert bytes to an integer.
`static long`	`bytesToLong(byte[] buffer)`	Convert bytes to a long.
`static long`	`bytesToLong(byte[] buffer, int offset)`	Convert bytes to a long.
`static short`	`bytesToShort(byte[] buffer)`	Convert bytes to a short.
`static short`	`bytesToShort(byte[] buffer, int offset)`	Convert bytes to a short.
`static java.lang.String`	`bytesToString(long bytes)`	Get bytes as human readable string.
`static <T,E> java.util.List<java.util.Map<T,E>>`	`calculateCartesianProduct(T[] names, E[] values)`	Calculate the cartesian product of parameters.
`static java.lang.String`	`camelToSnakeCase(java.lang.String camel)`	Convert CamelCase to snake_case.
`static void`	`close(java.io.Closeable closeable)`	Attempt to close a Closeable (e.g.
`static void`	`close(java.net.Socket socket)`	Attempt to close a Socket (e.g.
`static java.util.Set<java.net.URL>`	`collectClasspathURLs(java.lang.ClassLoader baseloader)`	Get other contained (but not directly managed) urls from parent classloaders.
`protected static void`	`collectClasspathURLs(java.lang.ClassLoader classloader, java.util.Set<java.net.URL> set, java.util.Set<java.lang.String> jarnames)`	Collect all URLs belonging to a class loader.
`static void`	`collectManifestURLs(java.net.URL url, java.util.Set<java.net.URL> set, java.util.Set<java.lang.String> jarnames)`	Collect all URLs as specified in a manifest.
`static int`	`compareTo(java.lang.String a, java.lang.String b)`	Compares two strings, ignoring case.
`static byte[]`	`computeFileHash(java.lang.String filename)`	Compute a file hash.
`static byte[]`	`computeFileHash(java.lang.String filename, java.lang.String algorithm)`	Compute a file hash.
`static boolean`	`containsDigit(java.lang.String s)`	Test if a string contains a digit.
`static <T> java.util.Map<java.lang.String,T>`	`convertMapKeysToLowercase(java.util.Map<java.lang.String,T> map)`	Create a map copy with all keys in lowercase.
`static java.lang.String`	`convertPathToPackage(java.lang.String path, java.net.URL[] urls)`	Find a package name from a path.
`static java.lang.String`	`convertPathToRelative(java.lang.String absolute)`	Convert an absolute path to a relative path based on the current user directory.
`static java.lang.RuntimeException`	`convertToRuntimeException(java.lang.Throwable e)`	Converts an exception to RuntimeException, returns original if already a RuntimeException.
`static java.lang.String`	`convertURLToString(java.net.URL url)`	Convert an URL to a local file name.
`static <T> T[]`	`copyArray(T[] original)`	Copy an array.
`static void`	`copyFile(java.io.File source, java.io.File target)`	Copy a file.
`static int`	`copyStream(java.io.InputStream is, java.io.OutputStream os)`	Copy all data from input to output stream.
`static int`	`countOccurrences(java.lang.String string, char find)`	Count the occurrences of a char in a string.
`static <T> java.util.List<T>`	`createArrayList(T[] values)`	Create an array list from values.
`static <K,T> java.util.Map<K,T>`	`createHashMap(K[] keys, T[] values)`	Create a hash map from keys and values.
`static <T> java.util.Set<T>`	`createHashSet(T[] values)`	Create a hash set from values.
`static java.lang.String`	`createPlainRandomId(java.lang.String name, int length)`	Create a random id with only alphanumeric chars.
`static java.util.regex.Pattern`	`createRegexFromGlob(java.lang.String glob)`	Create a regex from a normal bnf pattern.
`static java.lang.String`	`createUniqueId()`	Create a globally unique conversation id.
`static java.lang.String`	`createUniqueId(java.lang.String name)`	Create a globally unique conversation id.
`static java.lang.Object`	`cutArrays(java.lang.Object a1, java.lang.Object a2)`	Cut two arrays.
`static java.util.Date`	`dateFromIso8601(java.lang.String isostring)`	Attempts to create a date object in Java from an ISO 8601 string.
`static java.lang.String`	`dateToIso8601(java.util.Date date)`	Creates an ISO 8601-compliant string out of a java Date object.
`static boolean`	`deleteDirectory(java.io.File dir)`	Delete a directory completely (including all subdirs and files).
`static int`	`diffuseStringHash(java.lang.String s)`	Generate a diffuse string hash.
`static void`	`ensureNonblockingSecureRandom()`	Ensures SecureRandom use is nonblocking in all cases.
`static boolean`	`equals(java.lang.Object val1, java.lang.Object val2)`
`static java.lang.String`	`escapeLineBreaks(java.lang.String unescapedstring)`	Escapes all line breaks similar to Java string literals.
`static java.lang.String`	`escapeString(java.lang.String str)`	Escape a java string.
`static java.io.File`	`findDirForProject(java.lang.String project)`	Find dir for given project.
`static <K,V> K`	`findKeyForValue(java.util.Map<K,V> map, V value)`	Helper to find first matching key (if any) for a value (identity check).
`static java.io.File[]`	`findOutputDirs(java.lang.String projectroot, boolean includeTestClasses)`	Try to find the correct classpath root directories for current build tool chain.
`static java.lang.String`	`firstToUpperCase(java.lang.String str)`	Convert a string to the same string with first letter in upper case.
`static java.lang.String`	`formatByteSize(long bytes)`	Converts a number of bytes into a human-friendly binary prefix unit string (kiB, MiB, GiB, ...).
`static java.io.File`	`getAppDir()`	Gets the "application directory", normally the current working directory, except in Android.
`static int`	`getArrayDimension(java.lang.Object array)`	Get the array dimension.
`static java.lang.String`	`getClassFileLocation(java.lang.Class<?> clazz)`	Get the file location for a class (either filename or jar url).
`static java.util.List<java.net.URL>`	`getClasspathURLs(java.lang.ClassLoader classloader, boolean includebootpath)`	Get the current classpath as a list of URLs
`static java.lang.String`	`getCodeSource(java.lang.String filename, java.lang.String pck)`	Get the source code base using a packagename and a filename.
`static java.io.File`	`getDefaultDirectory()`	Get the home directory.
`static java.lang.String`	`getDisplayName(java.io.File file)`	Get the display name (e.g.
`static java.lang.String`	`getDurationHMS(long ms)`	Get a string representation for a duration.
`static java.lang.String`	`getExceptionStacktrace(java.lang.Throwable e)`	Get the exception stacktrace.
`static java.io.File`	`getFile(java.net.URL url)`	Get the file from an URL.
`static java.io.File[]`	`getFiles(java.io.File file, boolean hiding)`	Get the files of a directory.
`static java.lang.String`	`getGeoIPLocation()`	Determine the location of the local computer using some GeoIP web service.
`static java.io.File`	`getHomeDirectory()`	Get the home directory.
`static java.net.InetAddress`	`getInet4Address()`	Get a IPV4 address of the local host.
`static java.net.InetAddress`	`getInet6Address()`	Get a IPV4 address of the local host.
`static java.net.InetAddress`	`getInetAddress()`	Get an address of the local host.
`static java.lang.String`	`getJarName(java.lang.String filename)`	Get the name of a jar file without extension and version info.
`static long`	`getLastModified(java.io.File f)`	Recursively get the newest last modified of a file or directory tree.
`static long`	`getLastModified(java.io.File f, boolean nocache)`	Recursively get the newest last modified of a file or directory tree.
`static java.lang.String`	`getMacAddress()`	Get the mac address.
`static java.lang.String`	`getMacAddressAsString(byte[] mac)`	Convert a mac address to a string.
`static java.lang.String[]`	`getMacAddresses()`	Get the mac address.
`static java.net.InetAddress[]`	`getNetworkAddresses()`	Get the addresses to be used for transports.
`static java.util.List<java.net.NetworkInterface>`	`getNetworkInterfaces()`	Get the network interfaces.
`static java.net.InetAddress`	`getNetworkIp(java.net.InetAddress addr, short prefixlen)`	Get the network ip for an internet address and the prefix length.
`static java.util.List<java.net.InetAddress>`	`getNetworkIps()`	Get the network ips.
`static short`	`getNetworkPrefixLength(java.net.InetAddress iadr)`	Get the network prefix length for IPV4 address 24=C, 16=B, 8=A classes.
`static java.io.OutputStream`	`getOutForSystemIn()`	Get an output stream that is automatically fed into the new System.in, i.e.
`static java.lang.String`	`getOutputDirsExpression(java.lang.String projectroot, boolean includeTestClasses)`	Try to find the correct classpath root directories for current build tool chain.
`static java.io.File`	`getParentDirectory(java.io.File file)`	Get the parent directory.
`static java.lang.String`	`getPlural(java.lang.String s)`	Get the plural of a word in singular.
`static int`	`getPrefixLength(java.io.File file)`	Get the prefix length of a file.
`static java.io.InputStream`	`getResource(java.lang.String name, java.lang.ClassLoader classloader)`	Get an input stream for whatever provided.
`static java.io.InputStream`	`getResource0(java.lang.String name, java.lang.ClassLoader classloader)`	Get an input stream for whatever provided.
`static ResourceInfo`	`getResourceInfo0(java.lang.String name, java.lang.ClassLoader classloader)`	Get an input stream for whatever provided.
`static java.security.SecureRandom`	`getSecureRandom()`	Gets the global secure random.
`static java.lang.String`	`getSingular(java.lang.String s)`	Get the singular of a word in plural.
`static java.lang.String`	`getStackTrace(java.lang.Exception e)`	Get the exception stack trace as string.
`static java.lang.String`	`getStackTraceString(java.lang.String topline, java.lang.StackTraceElement[] trace)`	Converts a stack trace array to a printable string.
`static java.lang.String[]`	`getStringArray(java.lang.String key, java.util.Properties props)`	Get a string array of properties that are separated by commas.
`static java.lang.String`	`guessContentTypeByFilename(java.lang.String name)`	Guess the mime type by the file name.
`protected static void`	`hashDirectory(java.lang.String root, java.io.File dir, java.security.MessageDigest md)`	Get the hash code of a directory recursively.
`protected static void`	`hashStream(java.io.InputStream is, java.security.MessageDigest md)`
`static java.lang.String`	`hex(byte[] data)`	Convert a byte array to a string representation.
`static java.lang.String`	`hex(byte[] data, boolean uppercase)`	Convert a byte array to a string representation.
`static java.lang.String`	`hex(byte[] data, java.lang.String delim, int block)`	Convert a byte array to a string representation.
`static java.lang.String`	`hex(byte[] data, java.lang.String delim, int block, boolean uppercase)`	Convert a byte array to a string representation.
`static java.lang.String`	`hex(char ch)`	Convert char to hex vavlue.
`static int`	`indexOfFilename(java.lang.String url, java.util.List<java.lang.String> urlstrings)`	Test if a file name is contained.
`static int`	`inndexOfLastUpperCaseCharacter(java.lang.String str)`	Find index of last upper case letter.
`static java.lang.String`	`intern(java.lang.String string)`	Optimized version of String.intern() that actually uses String.intern() but provides faster lookups if the String is already interned.
`protected static void`	`internalMoveFile(java.io.File source, java.io.File target)`	Moves a file to a target location.
`static void`	`intIntoBytes(int val, byte[] buffer, int offset)`	Convert a long to bytes.
`static byte[]`	`intToBytes(int val)`	Convert an integer to bytes.
`static boolean`	`isFloppyDrive(java.io.File file)`	Check if a file represents a floppy.
`static boolean`	`isGuiThread()`	Test if a call is running on the swing thread.
`static boolean`	`isInRange(java.util.Date date, java.util.Date start, java.util.Date end)`	Test if the date is in the range.
`static boolean`	`isJavaSourceFilename(java.lang.String filename)`	Test if a file is a Java source file.
`static boolean`	`isUTF8(byte[] bytes)`	Test if starts with UTF-8 BOM.
`static boolean`	`isWindows()`	Tests if the OS is Windows.
`static <T> java.lang.Object[]`	`iteratorToArray(java.util.Iterator<T> it, java.lang.Class<T> clazz)`	Transform an iterator to an array.
`static <T> java.util.List<T>`	`iteratorToList(java.util.Iterator<T> it)`	Transform an iterator to a list.
`static <T> java.util.List<T>`	`iteratorToList(java.util.Iterator<T> it, java.util.List<T> ret)`	Transform an iterator to a list.
`static <T> T[]`	`joinArbitraryArrays(java.lang.Object[] as)`	Joins any arrays of (possibly) different type.
`static java.lang.Object`	`joinArrays(java.lang.Object... arrays)`	Joins two arrays of the same type.
`static java.lang.String`	`loadBinary(java.lang.String file)`	Load a binary file as base 64 string, e.g.
`protected static LRU<java.lang.String,Tuple2<java.lang.Long,java.lang.String>>`	`loadHashCache()`	Load the stored hashes.
`static int`	`log2(int num)`	Fast way to compute log2(x).
`static int`	`log2(long num)`	Fast way to compute log2(x).
`static void`	`longIntoBytes(long val, byte[] buffer)`	Convert a long to bytes.
`static void`	`longIntoBytes(long val, byte[] buffer, int offset)`	Convert a long to bytes.
`static byte[]`	`longToBytes(long val)`	Convert a long to bytes.
`static void`	`main(java.lang.String[] args)`
`static java.lang.String`	`makeConform(java.lang.String input)`	Convert an output to html/wml conform presentation.
`static java.lang.String`	`makeConform(java.lang.String input, int flag)`	Convert an output to html/wml conform presentation.
`static java.lang.String`	`makeEnglishConform(java.lang.String input)`	Convert an output readable in english.
`static byte[]`	`mergeData(byte[]... data)`	Primitive encoding approach: Merges multiple byte arrays into a single one so it can be split later.
`static void`	`moveFile(java.io.File source, java.io.File target)`	Moves a file to a target location.
`static <T> java.util.Collection<T>`	`notNull(java.util.Collection<T> coll)`	Helper method to allow iterating over possibly null collections.
`static <T> java.util.List<T>`	`notNull(java.util.List<T> list)`	Helper method to allow iterating over possibly null lists.
`static <K,E> java.util.Map<K,E>`	`notNull(java.util.Map<K,E> map)`	Helper method to allow iterating over possibly null maps.
`static <T> java.util.Set<T>`	`notNull(java.util.Set<T> set)`	Helper method to allow iterating over possibly null sets.
`static byte[]`	`readFile(java.io.File file)`	Reads a file into memory (byte array).
`static java.lang.String`	`readFile(java.lang.String filename)`	Read a file to string.
`static java.lang.String`	`readFile(java.lang.String filename, java.lang.ClassLoader cl)`	Read a file to string.
`static void`	`readStream(byte[] buf, int off, int len, java.io.InputStream is)`	Reads part of an input stream into a buffer.
`static void`	`readStream(byte[] buf, int off, int len, java.io.InputStream is, long skip)`	Reads part of an input stream into a buffer.
`static void`	`readStream(byte[] buf, java.io.InputStream is)`	Fills buffer from an input stream.
`static byte[]`	`readStream(java.io.InputStream is)`	Reads an input stream into memory (byte array).
`static java.lang.String[]`	`readStreamLines(java.io.InputStream is)`	Reads a (text) stream line-wise and returns lines as array.
`static java.lang.String[]`	`readStreamLines(java.io.InputStream is, java.nio.charset.Charset encoding)`	Reads a (text) stream line-wise and returns lines as array.
`static java.lang.String`	`removeBOM(java.lang.String text)`	Remove BOM from UTF text.
`static java.lang.String`	`removeExtension(java.lang.String fn)`	Remove file extension.
`static void`	`removeSystemErrListener(IChangeListener listener)`	Remove a listener from System.err.
`static void`	`removeSystemOutListener(IChangeListener listener)`	Remove a listener from System.out.
`static java.net.URL[]`	`removeSystemUrls(java.net.URL[] urls)`	Removes the (.jar) URLs contained in directories associated with the JVM.
`static void`	`replace(java.lang.String source, java.lang.StringBuffer dest, java.lang.String old, java.lang.String newstring)`	Parse a source string replacing occurrences and storing the result in the given string buffer.
`static java.lang.String`	`replace(java.lang.String source, java.lang.String old, java.lang.String newstring)`	Parse a source string replacing occurrences and returning the result.
`static java.lang.String`	`replaceLast(java.lang.String string, java.lang.String toreplace, java.lang.String replacement)`	Replace the last occurrence of a substring.
`static void`	`rethrowAsUnchecked(java.lang.Throwable e)`	Re-throws a throwable as a RuntimeException.
`static void`	`shortIntoBytes(int val, byte[] buffer, int offset)`	Convert a short into byte array.
`static byte[]`	`shortToBytes(int val)`	Convert a short to bytes.
`static void`	`sleep(long millis)`	Sleep the current thread, ignore exceptions.
`static java.lang.String`	`snakeToCamelCase(java.lang.String snake)`	Convert snake_case to CamelCase.
`static java.lang.String[]`	`splitCommandline(java.lang.String line)`	Taken from ant.
`static java.util.List<byte[]>`	`splitData(byte[] data)`	Primitive encoding approach: Splits a byte array that was encoded with mergeData().
`static java.util.List<byte[]>`	`splitData(byte[] data, int offset, int length)`	Primitive encoding approach: Splits a byte array that was encoded with mergeData().
`static java.lang.String`	`stripTags(java.lang.String source)`	Strip tags (e.g.
`static java.lang.Object`	`substractArrays(java.lang.Object a1, java.lang.Object a2)`	First array minus second array.
`protected static void`	`testIntByteConversion()`
`static java.lang.RuntimeException`	`throwUnchecked(java.lang.Throwable t)`	Convert a throwable to an unchecked exception (i.e.
`static java.io.File`	`toFile(java.net.URL url)`	Converts a file URL to a File, returns null if invalid.
`static java.io.File`	`toFile0(java.net.URL url)`	Converts a file URL to a File, returns null if invalid.
`static java.net.URI`	`toURI(java.lang.String transporturi)`	Convert stringified URI (as used in transports for some weird reason) to URI.
`static java.net.URI`	`toURI(java.lang.String scheme, java.net.InetAddress address, int port)`	Convert a scheme, InetAdress and port to a valid URI or throw.
`static java.net.URI`	`toURI(java.net.URL url)`	Convert a URL to a URI but ignore exceptions
`static java.net.URI`	`toURI0(java.net.URL url)`	Convert a URL to a URI but ignore exceptions
`static java.net.URL`	`toURL(java.lang.Object url)`	Convert a file/string/url.
`static java.net.URL`	`toURL0(java.net.URI uri)`	Convert a URI to a URL but ignore exceptions
`static java.net.URL[]`	`toURLs(java.lang.Object[] urls)`	Convert a file/string/url array.
`static java.lang.String`	`toUTF8(byte[] bytes)`	Returns a UTF8 byte array as string.
`static java.lang.String`	`unescapeLineBreaks(java.lang.String escapedstring)`	Unescapes all line breaks from strings similar to Java string literals.
`static void`	`unzip(java.util.zip.ZipFile zip, java.io.File dir)`	Unzip a file into a specific dir.
`static java.io.File`	`urlToFile(java.lang.String url)`	Convert an URL to a file.
`static java.lang.String`	`wrapText(java.lang.String text)`	Wrap a text at a given line length.
`static java.lang.String`	`wrapText(java.lang.String text, int wrap)`	Wrap a text at a given line length.
`static void`	`writeDirectory(java.io.File dir, java.io.OutputStream out)`	Write a directory as jar to an output stream.
`protected static void`	`writeDirectory(java.lang.String prefix, java.io.File dir, java.util.zip.ZipOutputStream zos, byte[] buf)`	Write a directory as jar to an output stream.
`static void`	`writeFile(java.lang.String val, java.lang.String filename)`	Write a string to a file.
`static void`	`writeFile(java.lang.String val, java.lang.String filename, java.lang.String charset)`	Write a string to a file.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - JADEXDIR
```
public static final java.lang.String JADEXDIR
```
    Directory were jadex stores files generated during runtime, to be used for later runs.
    
    See Also:
    
    Constant Field Values
  - LF
```
public static final java.lang.String LF
```
    Line separator.
  - BYTE_UNITS
```
public static final java.lang.String[] BYTE_UNITS
```
    Units for representing byte values.
  - BYTEFORMATTER1
```
public static final java.text.DecimalFormat BYTEFORMATTER1
```
    The byte formatter for one predecimal digit.
  - BYTEFORMATTER2
```
public static final java.text.DecimalFormat BYTEFORMATTER2
```
    The byte formatter for two predecimal digits.
  - BYTEFORMATTER3
```
public static final java.text.DecimalFormat BYTEFORMATTER3
```
    The byte formatter for three predecimal digits.
  - CONVERT_ALL
```
public static final int CONVERT_ALL
```
    Constant that indicates a conversion of all known characters.
    
    See Also:
    
    Constant Field Values
  - CONVERT_ALL_EXCEPT_AMP
```
public static final int CONVERT_ALL_EXCEPT_AMP
```
    Constant that indicates a conversion of all known characters except &.
    
    See Also:
    
    Constant Field Values
  - CONVERT_NONE
```
public static final int CONVERT_NONE
```
    Constant that indicates a conversion of no characters.
    
    See Also:
    
    Constant Field Values
  - NULL
```
public static final java.lang.String NULL
```
    A Null value.
    
    See Also:
    
    Constant Field Values
  - ASCII
```
public static final java.nio.charset.Charset ASCII
```
    ASCII charset.
  - UTF8
```
public static final java.nio.charset.Charset UTF8
```
    UTF-8 charset.
  - ISO8859_1
```
public static final java.nio.charset.Charset ISO8859_1
```
    ISO-8859-1 charset.
  - FAST_RANDOM
```
public static final java.util.Random FAST_RANDOM
```
    Access to non-secure fast random source.
  - SECURE_RANDOM
```
public static volatile java.security.SecureRandom SECURE_RANDOM
```
    Access to secure random source.
  - MIMETYPES
```
protected static volatile java.util.Map<java.lang.String,java.lang.String> MIMETYPES
```
    The mime types.
  - SDF
```
public static final java.lang.ThreadLocal<java.text.DateFormat> SDF
```
    Simple date format.
  - SDF2
```
public static final java.lang.ThreadLocal<java.text.DateFormat> SDF2
```
  - SDF3
```
public static final java.lang.ThreadLocal<java.text.DateFormat> SDF3
```
  - ISO8601UTCFALLBACKS
```
public static final java.lang.String[] ISO8601UTCFALLBACKS
```
    ISO8601 fallbacks assuming UTC.
  - ISO8601ZONEDFALLBACKS
```
public static final java.lang.String[] ISO8601ZONEDFALLBACKS
```
    ISO8601 fallbacks with included timezone.
  - appdir
```
protected static volatile java.io.File appdir
```
    Application directory, current working dir under normal Java, special with Android.
  - htmlwraps
```
protected static final java.util.Map<java.lang.String,java.lang.String> htmlwraps
```
    Mapping from single characters to encoded version for displaying on xml-style interfaces.
  - seps
```
protected static final java.lang.String seps
```
    Holds the single characters.
  - EMPTY_ENUMERATION
```
public static final java.util.Enumeration EMPTY_ENUMERATION
```
    An empty enumeration.
  - EMPTY_STRING_ARRAY
```
public static final java.lang.String[] EMPTY_STRING_ARRAY
```
    An empty string array.
  - EMPTY_CLASS_ARRAY
```
public static final java.lang.Class[] EMPTY_CLASS_ARRAY
```
    An empty class array.
  - EMPTY_OBJECT_ARRAY
```
public static final java.lang.Object[] EMPTY_OBJECT_ARRAY
```
    An empty class array.
  - RESOURCEINFO_MAPPERS
```
protected static final IResultCommand<ResourceInfo,java.net.URLConnection>[] RESOURCEINFO_MAPPERS
```
  - DEFTIMEOUT
```
public static final long DEFTIMEOUT
```
    Default timeout e.g. from environment.
  - DEFTIMEOUT_DEFAULT
```
public static final long DEFTIMEOUT_DEFAULT
```
    See Also:
    
    Constant Field Values
  - convidcnt
```
protected static java.util.concurrent.atomic.AtomicLong convidcnt
```
    The counter for conversation ids.
  - OUT_FOR_SYSTEM_IN
```
protected static java.io.OutputStream OUT_FOR_SYSTEM_IN
```
  - NIS
```
protected static volatile java.util.List<java.net.NetworkInterface> NIS
```
    The cached network interfaces.
  - NISTIME
```
protected static long NISTIME
```
    The time of the last caching of network interfaces.
  - macs
```
public static volatile java.lang.String[] macs
```
    Cached for speed.
  - HASHES
```
protected static LRU<java.lang.String,Tuple2<java.lang.Long,java.lang.String>> HASHES
```
    LRU for hashes.
  - LASTMODS
```
protected static LRU<java.lang.String,java.lang.Long> LASTMODS
```
    LRU for directory modification dates.
  - ID_CHARS
```
protected static final char[] ID_CHARS
```
    Lookup table used for unique strings.
- Constructor Detail
  - SUtil
```
public SUtil()
```
- Method Detail
  - getSecureRandom
```
public static final java.security.SecureRandom getSecureRandom()
```
    Gets the global secure random.
    
    Returns:
    
    The secure random.
  - getStringArray
```
public static java.lang.String[] getStringArray(java.lang.String key,
                                                java.util.Properties props)
```
    Get a string array of properties that are separated by commas.
    
    Parameters:
    
    key - The key.
    
    props - The properties.
    
    Returns:
    
    The strings.
  - joinArrays
```
public static java.lang.Object joinArrays(java.lang.Object... arrays)
```
    Joins two arrays of the same type. Creates a new array containing the values of the first array followed by the values of the second.
    
    Parameters:
    
    a1 - The first array.
    
    a2 - The second array.
    
    Returns:
    
    The joined array.
  - joinArbitraryArrays
```
public static <T> T[] joinArbitraryArrays(java.lang.Object[] as)
```
    Joins any arrays of (possibly) different type. todo: Does not support basic types yet. Problem basic type array and object arrays cannot be mapped (except they are mapped).
    
    Parameters:
    
    as - The array of arrays to join..
    
    Returns:
    
    The joined array.
  - cutArrays
```
public static java.lang.Object cutArrays(java.lang.Object a1,
                                         java.lang.Object a2)
```
    Cut two arrays.
    
    Parameters:
    
    a1 - The first array.
    
    a2 - The second array.
    
    Returns:
    
    The cutted array.
  - substractArrays
```
public static java.lang.Object substractArrays(java.lang.Object a1,
                                               java.lang.Object a2)
```
    First array minus second array.
    
    Parameters:
    
    a1 - The first array.
    
    a2 - The second array.
    
    Returns:
    
    The substracted array.
  - arrayToList
```
public static <T> java.util.List<T> arrayToList(java.lang.Object a)
```
    Transform an array to a vector.
    
    Parameters:
    
    a - The array.
    
    Returns:
    
    The vector for the array.
  - arrayToSet
```
public static <T> java.util.Set<T> arrayToSet(java.lang.Object a)
```
    Transform an array to a vector.
    
    Parameters:
    
    a - The array.
    
    Returns:
    
    The vector for the array.
  - iteratorToList
```
public static <T> java.util.List<T> iteratorToList(java.util.Iterator<T> it)
```
    Transform an iterator to a list.
  - iteratorToList
```
public static <T> java.util.List<T> iteratorToList(java.util.Iterator<T> it,
                                                   java.util.List<T> ret)
```
    Transform an iterator to a list.
  - iteratorToArray
```
public static <T> java.lang.Object[] iteratorToArray(java.util.Iterator<T> it,
                                                     java.lang.Class<T> clazz)
```
    Transform an iterator to an array.
  - arrayContains
```
public static boolean arrayContains(java.lang.Object array,
                                    java.lang.Object value)
```
    Check if an element is contained in an array.
    
    Parameters:
    
    array - The array.
    
    value - The value.
  - getArrayDimension
```
public static int getArrayDimension(java.lang.Object array)
```
    Get the array dimension.
    
    Parameters:
    
    array - The array.
    
    Returns:
    
    The number of dimensions.
  - equals
```
public static boolean equals(java.lang.Object val1,
                             java.lang.Object val2)
```
  - arrayEmptyOrNull
```
public static final boolean arrayEmptyOrNull(java.lang.Object array)
```
    Test if two arrays are content equal or both null.
    
    Parameters:
    
    array1 - The first array.
    
    array2 - The second array.
    
    Returns:
    
    True when the arrays are content equal.
  - arrayEquals
```
public static boolean arrayEquals(java.lang.Object array1,
                                  java.lang.Object array2)
```
    Test if two arrays are content equal or both null.
    
    Parameters:
    
    array1 - The first array.
    
    array2 - The second array.
    
    Returns:
    
    True when the arrays are content equal.
  - arrayHashCode
```
public static int arrayHashCode(java.lang.Object a)
```
    Calculate a hash code for an array.
  - arrayToString
```
public static java.lang.String arrayToString(java.lang.Object array)
```
    Get a string representation for an array.
    
    Parameters:
    
    array - The array.
    
    Returns:
    
    formatted string.
  - convertMapKeysToLowercase
```
public static <T> java.util.Map<java.lang.String,T> convertMapKeysToLowercase(java.util.Map<java.lang.String,T> map)
```
    Create a map copy with all keys in lowercase.
    
    Parameters:
    
    map - The original map.
    
    Returns:
    
    The converted map.
  - getSingular
```
public static java.lang.String getSingular(java.lang.String s)
```
    Get the singular of a word in plural. Does NOT find all correct singular.
    
    Parameters:
    
    s - The plural word.
    
    Returns:
    
    The singular of this word.
  - getPlural
```
public static java.lang.String getPlural(java.lang.String s)
```
    Get the plural of a word in singular. Does NOT find all correct plurals.
    
    Parameters:
    
    s - The word.
    
    Returns:
    
    The plural of this word.
  - compareTo
```
public static int compareTo(java.lang.String a,
                            java.lang.String b)
```
    Compares two strings, ignoring case.
    
    Parameters:
    
    a - The first string.
    
    b - The second string.
    
    Returns:
    
    a
  isInRange
  
  public static boolean isInRange(java.util.Date date, java.util.Date start, java.util.Date end)
  
  Test if the date is in the range. Start or end may null and will so not be checked.
  
  Parameters:
  
  date - The date.
  
  start - The start.
  
  end - The end.
  
  Returns:
  
  True, if date is in range.
  
  removeExtension
  
  public static java.lang.String removeExtension(java.lang.String fn)
  
  Remove file extension.
  
  Parameters:
  
  fn - The filename..
  
  Returns:
  
  filename without extension.
  
  wrapText
  
  public static java.lang.String wrapText(java.lang.String text)
  
  Wrap a text at a given line length. Doesn't to word wrap, just inserts linebreaks every nth character. If the string already contains linebreaks, these are handled properly (extra linebreaks will only be inserted when needed).
  
  Parameters:
  
  text - The text to wrap.
  
  wrapText
  
  public static java.lang.String wrapText(java.lang.String text, int wrap)
  
  Wrap a text at a given line length. Doesn't to word wrap, just inserts linebreaks every nth character. If the string already contains linebreaks, these are handled properly (extra linebreaks will only be inserted when needed).
  
  Parameters:
  
  text - The text to wrap.
  
  wrap - The column width.
  
  makeConform
  
  public static java.lang.String makeConform(java.lang.String input)
  
  Convert an output to html/wml conform presentation.
  
  Parameters:
  
  input - The input string.
  
  Returns:
  
  The converted output string.
  
  makeConform
  
  public static java.lang.String makeConform(java.lang.String input, int flag)
  
  Convert an output to html/wml conform presentation.
  
  Parameters:
  
  input - The input string.
  
  flag - CONVERT_ALL, CONVERT_NONE, CONVERT_ALL_EXCEPT_AMP;
  
  Returns:
  
  The converted output string.
  
  stripTags
  
  public static java.lang.String stripTags(java.lang.String source)
  
  Strip tags (e.g. html) from a string, leaving only the text content.
  
  makeEnglishConform
  
  public static java.lang.String makeEnglishConform(java.lang.String input)
  
  Convert an output readable in english. Therefore remove all äs, ös, üs etc.
  
  Parameters:
  
  input - The input string.
  
  Returns:
  
  The converted output string.
  
  camelToSnakeCase
  
  public static java.lang.String camelToSnakeCase(java.lang.String camel)
  
  Convert CamelCase to snake_case.
  
  snakeToCamelCase
  
  public static java.lang.String snakeToCamelCase(java.lang.String snake)
  
  Convert snake_case to CamelCase.
  
  replace
  
  public static void replace(java.lang.String source, java.lang.StringBuffer dest, java.lang.String old, java.lang.String newstring)
  
  Parse a source string replacing occurrences and storing the result in the given string buffer. This is a fast alternative to String.replaceAll(), because it does not use regular expressions.
  
  Parameters:
  
  source - The source string.
  
  dest - The destination string buffer.
  
  old - The string to replace.
  
  newstring - The string to use as replacement.
  
  replace
  
  public static java.lang.String replace(java.lang.String source, java.lang.String old, java.lang.String newstring)
  
  Parse a source string replacing occurrences and returning the result. This is a fast alternative to String.replaceAll(), because it does not use regular expressions.
  
  Parameters:
  
  source - The source string.
  
  old - The string to replace.
  
  newstring - The string to use as replacement.
  
  getResource
  
  public static java.io.InputStream getResource(java.lang.String name, java.lang.ClassLoader classloader) throws java.io.IOException
  
  Get an input stream for whatever provided. 1. It is tried to load the resource as file. 2. It is tried to load the resource via the ClassLoader. 3. It is tried to load the resource as URL.
  
  Parameters:
  
  name - The resource description.
  
  Returns:
  
  The input stream for the resource.
  
  Throws:
  
  java.io.IOException - when the resource was not found.
  
  getResource0
  
  public static java.io.InputStream getResource0(java.lang.String name, java.lang.ClassLoader classloader)
  
  Get an input stream for whatever provided. 1. It is tried to load the resource as file. 2. It is tried to load the resource via the ClassLoader. 3. It is tried to load the resource as URL.
  
  Parameters:
  
  name - The resource description.
  
  Returns:
  
  The input stream for the resource or null when the resource was not found.
  
  getResourceInfo0
  
  public static ResourceInfo getResourceInfo0(java.lang.String name, java.lang.ClassLoader classloader)
  
  Get an input stream for whatever provided. 1. It is tried to load the resource as file. 2. It is tried to load the resource via the ClassLoader. 3. It is tried to load the resource as URL.
  
  Parameters:
  
  name - The resource description.
  
  Returns:
  
  The info object for the resource or null when the resource was not found.
  
  copyStream
  
  public static int copyStream(java.io.InputStream is, java.io.OutputStream os)
  
  Copy all data from input to output stream.
  
  getDurationHMS
  
  public static java.lang.String getDurationHMS(long ms)
  
  Get a string representation for a duration.
  
  Parameters:
  
  ms - The duration in ms.
  
  Returns:
  
  The string representation.
  
  convertPathToPackage
  
  public static java.lang.String convertPathToPackage(java.lang.String path, java.net.URL[] urls)
  
  Find a package name from a path. Searches the most specific classpath and uses the rest of the pathname as package name.
  
  Parameters:
  
  path - The directory.
  
  Returns:
  
  The package.
  
  getClasspathURLs
  
  public static java.util.List<java.net.URL> getClasspathURLs(java.lang.ClassLoader classloader, boolean includebootpath)
  
  Get the current classpath as a list of URLs
  
  collectClasspathURLs
  
  public static java.util.Set<java.net.URL> collectClasspathURLs(java.lang.ClassLoader baseloader)
  
  Get other contained (but not directly managed) urls from parent classloaders.
  
  Returns:
  
  The set of urls.
  
  collectClasspathURLs
  
  protected static void collectClasspathURLs(java.lang.ClassLoader classloader, java.util.Set<java.net.URL> set, java.util.Set<java.lang.String> jarnames)
  
  Collect all URLs belonging to a class loader.
  
  getJarName
  
  public static java.lang.String getJarName(java.lang.String filename)
  
  Get the name of a jar file without extension and version info.
  
  collectManifestURLs
  
  public static void collectManifestURLs(java.net.URL url, java.util.Set<java.net.URL> set, java.util.Set<java.lang.String> jarnames)
  
  Collect all URLs as specified in a manifest.
  
  calculateCartesianProduct
  
  public static <T,E> java.util.List<java.util.Map<T,E>> calculateCartesianProduct(T[] names, E[] values)
  
  Calculate the cartesian product of parameters. Example: names = {"a", "b"}, values = {{"1", "2"}, {"3", "4"}} result = {{"a"="1", "b"="3"}, {"a"="2", "b"="3"}, {"a"="1", "b"="4"}, {"a=2", b="4"}}
  
  Parameters:
  
  names - The names.
  
  values - The values (must be some form of collection, i.e. array, list, iterator etc.)
  
  isJavaSourceFilename
  
  public static boolean isJavaSourceFilename(java.lang.String filename)
  
  Test if a file is a Java source file.
  
  Parameters:
  
  filename - The filename.
  
  Returns:
  
  True, if it is a Java source file.
  
  createHashMap
  
  public static <K,T> java.util.Map<K,T> createHashMap(K[] keys, T[] values)
  
  Create a hash map from keys and values.
  
  Parameters:
  
  keys - The keys.
  
  values - The values.
  
  Returns:
  
  The map.
  
  createHashSet
  
  public static <T> java.util.Set<T> createHashSet(T[] values)
  
  Create a hash set from values.
  
  Parameters:
  
  values - The values.
  
  Returns:
  
  The map.
  
  createArrayList
  
  public static <T> java.util.List<T> createArrayList(T[] values)
  
  Create an array list from values.
  
  Parameters:
  
  values - The values.
  
  Returns:
  
  The map.
  
  createUniqueId
  
  public static java.lang.String createUniqueId()
  
  Create a globally unique conversation id.
  
  Returns:
  
  The conversation id.
  
  createUniqueId
  
  public static java.lang.String createUniqueId(java.lang.String name)
  
  Create a globally unique conversation id.
  
  Returns:
  
  The conversation id.
  
  createPlainRandomId
  
  public static java.lang.String createPlainRandomId(java.lang.String name, int length)
  
  Create a random id with only alphanumeric chars.
  
  Returns:
  
  The id.
  
  testIntByteConversion
  
  protected static void testIntByteConversion()
  
  convertPathToRelative
  
  public static java.lang.String convertPathToRelative(java.lang.String absolute)
  
  Convert an absolute path to a relative path based on the current user directory.
  
  toURLs
  
  public static java.net.URL[] toURLs(java.lang.Object[] urls)
  
  Convert a file/string/url array.
  
  Parameters:
  
  urls - The url strings.
  
  Returns:
  
  The urls.
  
  toURL
  
  public static java.net.URL toURL(java.lang.Object url)
  
  Convert a file/string/url.
  
  toURL0
  
  public static java.net.URL toURL0(java.net.URI uri)
  
  Convert a URI to a URL but ignore exceptions
  
  toURI0
  
  public static java.net.URI toURI0(java.net.URL url)
  
  Convert a URL to a URI but ignore exceptions
  
  toURI
  
  public static java.net.URI toURI(java.net.URL url)
  
  Convert a URL to a URI but ignore exceptions
  
  toURI
  
  public static java.net.URI toURI(java.lang.String scheme, java.net.InetAddress address, int port)
  
  Convert a scheme, InetAdress and port to a valid URI or throw.
  
  Parameters:
  
  scheme -
  
  address -
  
  port -
  
  Returns:
  
  URI
  
  toURI
  
  public static java.net.URI toURI(java.lang.String transporturi)
  
  Convert stringified URI (as used in transports for some weird reason) to URI.
  
  Parameters:
  
  transporturi - Transport-style URI (tcp-mtp://hostpart:port or tcp-mtp://[h:o:s:t%scope]:port for ipv6)
  
  Returns:
  
  URI
  
  toFile
  
  public static final java.io.File toFile(java.net.URL url)
  
  Converts a file URL to a File, returns null if invalid.
  
  Parameters:
  
  url - The URL.
  
  Returns:
  
  File or null if invalid.
  
  toFile0
  
  public static final java.io.File toFile0(java.net.URL url)
  
  Converts a file URL to a File, returns null if invalid.
  
  Parameters:
  
  url - The URL.
  
  Returns:
  
  File or null if invalid.
  
  sleep
  
  public static final void sleep(long millis)
  
  Sleep the current thread, ignore exceptions.
  
  Parameters:
  
  millis - Time to sleep in milliseconds
  
  convertToRuntimeException
  
  public static final java.lang.RuntimeException convertToRuntimeException(java.lang.Throwable e)
  
  Converts an exception to RuntimeException, returns original if already a RuntimeException.
  
  Parameters:
  
  e - The throwable to be returned as RuntimeException
  
  Returns:
  
  RuntimeException.
  
  rethrowAsUnchecked
  
  public static final void rethrowAsUnchecked(java.lang.Throwable e)
  
  Re-throws a throwable as a RuntimeException. If the throwable is already a RuntimeException, the exception itself is thrown, otherwise it is wrapped.
  
  Parameters:
  
  e - The throwable to be thrown as RuntimeException
  
  main
  
  public static void main(java.lang.String[] args)
  
  formatByteSize
  
  public static java.lang.String formatByteSize(long bytes)
  
  Converts a number of bytes into a human-friendly binary prefix unit string (kiB, MiB, GiB, ...).
  
  Parameters:
  
  bytes - Number of bytes.
  
  bytesToShort
  
  public static short bytesToShort(byte[] buffer)
  
  Convert bytes to a short.
  
  bytesToShort
  
  public static short bytesToShort(byte[] buffer, int offset)
  
  Convert bytes to a short.
  
  shortToBytes
  
  public static byte[] shortToBytes(int val)
  
  Convert a short to bytes.
  
  shortIntoBytes
  
  public static void shortIntoBytes(int val, byte[] buffer, int offset)
  
  Convert a short into byte array.
  
  bytesToInt
  
  public static int bytesToInt(byte[] buffer)
  
  Convert bytes to an integer.
  
  bytesToInt
  
  public static int bytesToInt(byte[] buffer, int offset)
  
  Convert bytes to an integer.
  
  intToBytes
  
  public static byte[] intToBytes(int val)
  
  Convert an integer to bytes.
  
  intIntoBytes
  
  public static void intIntoBytes(int val, byte[] buffer, int offset)
  
  Convert a long to bytes.
  
  bytesToLong
  
  public static long bytesToLong(byte[] buffer)
  
  Convert bytes to a long.
  
  bytesToLong
  
  public static long bytesToLong(byte[] buffer, int offset)
  
  Convert bytes to a long.
  
  longToBytes
  
  public static byte[] longToBytes(long val)
  
  Convert a long to bytes.
  
  longIntoBytes
  
  public static void longIntoBytes(long val, byte[] buffer)
  
  Convert a long to bytes.
  
  longIntoBytes
  
  public static void longIntoBytes(long val, byte[] buffer, int offset)
  
  Convert a long to bytes.
  
  getNetworkIp
  
  public static java.net.InetAddress getNetworkIp(java.net.InetAddress addr, short prefixlen)
  
  Get the network ip for an internet address and the prefix length. Example: ip: 134.100.33.22 / prefixlen: 24 (c class) -> 134.100.33.0
  
  Parameters:
  
  addr - The internet address.
  
  prefixlen - The prefix length.
  
  Returns:
  
  The net address.
  
  bytesToString
  
  public static java.lang.String bytesToString(long bytes)
  
  Get bytes as human readable string.
  
  getClassFileLocation
  
  public static java.lang.String getClassFileLocation(java.lang.Class<?> clazz)
  
  Get the file location for a class (either filename or jar url).
  
  convertURLToString
  
  public static java.lang.String convertURLToString(java.net.URL url)
  
  Convert an URL to a local file name.
  
  Parameters:
  
  url - The url.
  
  Returns:
  
  The absolute path to the url resource.
  
  indexOfFilename
  
  public static int indexOfFilename(java.lang.String url, java.util.List<java.lang.String> urlstrings)
  
  Test if a file name is contained.
  
  urlToFile
  
  public static java.io.File urlToFile(java.lang.String url)
  
  Convert an URL to a file.
  
  Returns:
  
  null, if the URL is neither 'file:' nor 'jar:file:' URL and no path point to an existing file.
  
  intern
  
  public static final java.lang.String intern(java.lang.String string)
  
  Optimized version of String.intern() that actually uses String.intern() but provides faster lookups if the String is already interned.
  
  Parameters:
  
  string - The String being interned.
  
  Returns:
  
  The interned String.
  
  removeSystemUrls
  
  public static final java.net.URL[] removeSystemUrls(java.net.URL[] urls)
  
  Removes the (.jar) URLs contained in directories associated with the JVM.
  
  Parameters:
  
  urls - The input URLs.
  
  Returns:
  
  URLs without the system path URLs.
  
  dateToIso8601
  
  public static java.lang.String dateToIso8601(java.util.Date date)
  
  Creates an ISO 8601-compliant string out of a java Date object.
  
  Parameters:
  
  date - The date object.
  
  Returns:
  
  ISO 8601-compliant string.
  
  dateFromIso8601
  
  public static java.util.Date dateFromIso8601(java.lang.String isostring)
  
  Attempts to create a date object in Java from an ISO 8601 string.
  
  Parameters:
  
  isostring - The ISO string, must contain enough data for the date object.
  
  Returns:
  
  Date object.
  
  addSystemOutListener
  
  public static void addSystemOutListener(IChangeListener listener)
  
  Add a listener to System.out.
  
  removeSystemOutListener
  
  public static void removeSystemOutListener(IChangeListener listener)
  
  Remove a listener from System.out.
  
  addSystemErrListener
  
  public static void addSystemErrListener(IChangeListener listener)
  
  Add a listener to System.err.
  
  removeSystemErrListener
  
  public static void removeSystemErrListener(IChangeListener listener)
  
  Remove a listener from System.err.
  
  getOutForSystemIn
  
  public static java.io.OutputStream getOutForSystemIn() throws java.io.IOException
  
  Get an output stream that is automatically fed into the new System.in, i.e. this method replaces System.in and delivers an output stream to which can be written. Note that writing to the output stream may block when no one reads from system in (default buffer size is 1024 characters).
  
  Throws:
  
  java.io.IOException
  
  getInet4Address
  
  public static java.net.InetAddress getInet4Address()
  
  Get a IPV4 address of the local host. Ignores loopback address and V6 addresses.
  
  Returns:
  
  First found IPV4 address.
  
  getInet6Address
  
  public static java.net.InetAddress getInet6Address()
  
  Get a IPV4 address of the local host. Ignores loopback address and V4 addresses.
  
  Returns:
  
  First found IPV4 address.
  
  getInetAddress
  
  public static java.net.InetAddress getInetAddress()
  
  Get an address of the local host. Tries to get a IPV4 address and if not available tries to get a IPV6 address.
  
  Returns:
  
  First found IPV4 or IPV6 address.
  
  getNetworkPrefixLength
  
  public static short getNetworkPrefixLength(java.net.InetAddress iadr)
  
  Get the network prefix length for IPV4 address 24=C, 16=B, 8=A classes. Returns -1 in case of V6 address.
  
  Parameters:
  
  iadr - The address.
  
  Returns:
  
  The length of the prefix.
  
  getNetworkIps
  
  public static java.util.List<java.net.InetAddress> getNetworkIps()
  
  Get the network ips.
  
  copyArray
  
  public static <T> T[] copyArray(T[] original)
  
  Copy an array.
  
  getCodeSource
  
  public static java.lang.String getCodeSource(java.lang.String filename, java.lang.String pck)
  
  Get the source code base using a packagename and a filename. Looks at the filename and subtracts the package name.
  
  Parameters:
  
  filename - The filename.
  
  pck - The package name.
  
  Returns:
  
  The source base.
  
  countOccurrences
  
  public static int countOccurrences(java.lang.String string, char find)
  
  Count the occurrences of a char in a string.
  
  Parameters:
  
  string - The string.
  
  find - The char to find.
  
  Returns:
  
  The number of occurrences.
  
  getNetworkInterfaces
  
  public static java.util.List<java.net.NetworkInterface> getNetworkInterfaces() throws java.net.SocketException
  
  Get the network interfaces. The result is cached for a short time period to speed things up.
  
  Throws:
  
  java.net.SocketException
  
  getNetworkAddresses
  
  public static java.net.InetAddress[] getNetworkAddresses() throws java.net.SocketException
  
  Get the addresses to be used for transports.
  
  Throws:
  
  java.net.SocketException
  
  unzip
  
  public static void unzip(java.util.zip.ZipFile zip, java.io.File dir)
  
  Unzip a file into a specific dir.
  
  Parameters:
  
  zip - The zip file.
  
  dir - The target dir.
  
  deleteDirectory
  
  public static boolean deleteDirectory(java.io.File dir)
  
  Delete a directory completely (including all subdirs and files).
  
  Parameters:
  
  dir - The dir to delete.
  
  Returns:
  
  True, if was successfully deleted.
  
  getHomeDirectory
  
  public static java.io.File getHomeDirectory()
  
  Get the home directory.
  
  getDefaultDirectory
  
  public static java.io.File getDefaultDirectory()
  
  Get the home directory.
  
  getParentDirectory
  
  public static java.io.File getParentDirectory(java.io.File file)
  
  Get the parent directory.
  
  getFiles
  
  public static java.io.File[] getFiles(java.io.File file, boolean hiding)
  
  Get the files of a directory.
  
  getPrefixLength
  
  public static int getPrefixLength(java.io.File file)
  
  Get the prefix length of a file.
  
  isFloppyDrive
  
  public static boolean isFloppyDrive(java.io.File file)
  
  Check if a file represents a floppy. Returns false on android.
  
  getDisplayName
  
  public static java.lang.String getDisplayName(java.io.File file)
  
  Get the display name (e.g. of a system drive). Returns null on android.
  
  isGuiThread
  
  public static boolean isGuiThread()
  
  Test if a call is running on the swing thread.
  
  escapeString
  
  public static java.lang.String escapeString(java.lang.String str)
  
  Escape a java string.
  
  Parameters:
  
  str - The string to escape.
  
  Returns:
  
  The escaped string.
  
  mergeData
  
  public static byte[] mergeData(byte[]... data)
  
  Primitive encoding approach: Merges multiple byte arrays into a single one so it can be split later.
  
  Parameters:
  
  data - The input data.
  
  Returns:
  
  A merged byte array.
  
  splitData
  
  public static java.util.List<byte[]> splitData(byte[] data)
  
  Primitive encoding approach: Splits a byte array that was encoded with mergeData().
  
  Parameters:
  
  data - The input data.
  
  Returns:
  
  A list of byte arrays representing the original set.
  
  splitData
  
  public static java.util.List<byte[]> splitData(byte[] data, int offset, int length)
  
  Primitive encoding approach: Splits a byte array that was encoded with mergeData().
  
  Parameters:
  
  data - The input data.
  
  offset - Offset where the data is located.
  
  length - Length of the data, rest of data used if length < 0.
  
  Returns:
  
  A list of byte arrays representing the original set.
  
  hex
  
  public static java.lang.String hex(char ch)
  
  Convert char to hex vavlue.
  
  hex
  
  public static java.lang.String hex(byte[] data)
  
  Convert a byte array to a string representation.
  
  hex
  
  public static java.lang.String hex(byte[] data, boolean uppercase)
  
  Convert a byte array to a string representation.
  
  hex
  
  public static java.lang.String hex(byte[] data, java.lang.String delim, int block)
  
  Convert a byte array to a string representation.
  
  hex
  
  public static java.lang.String hex(byte[] data, java.lang.String delim, int block, boolean uppercase)
  
  Convert a byte array to a string representation.
  
  base16Encode
  
  public static java.lang.String base16Encode(byte[] data)
  
  Encodes a set of data as a Base16 String (hex).
  
  Parameters:
  
  data - The data.
  
  Returns:
  
  Base16-encoded String.
  
  base16Decode
  
  public static byte[] base16Decode(java.lang.String data)
  
  Decodes a Base16-encoded String and returns the data.
  
  Parameters:
  
  data - The encoded data.
  
  Returns:
  
  The decoded data.
  
  escapeLineBreaks
  
  public static java.lang.String escapeLineBreaks(java.lang.String unescapedstring)
  
  Escapes all line breaks similar to Java string literals.
  
  Parameters:
  
  unescapedstring - Unescaped input string.
  
  Returns:
  
  Escaped string.
  
  unescapeLineBreaks
  
  public static java.lang.String unescapeLineBreaks(java.lang.String escapedstring)
  
  Unescapes all line breaks from strings similar to Java string literals.
  
  Parameters:
  
  escapedstring - Escaped input string.
  
  Returns:
  
  Unescaped string.
  
  splitCommandline
  
  public static java.lang.String[] splitCommandline(java.lang.String line)
  
  Taken from ant. Split a command line.
  
  Parameters:
  
  line - The command line to process.
  
  Returns:
  
  The command line broken into strings. An empty or null toProcess parameter results in a zero sized array.
  
  getFile
  
  public static java.io.File getFile(java.net.URL url)
  
  Get the file from an URL.
  
  Parameters:
  
  url - The file URL.
  
  Returns:
  
  The file.
  
  copyFile
  
  public static void copyFile(java.io.File source, java.io.File target) throws java.io.IOException
  
  Copy a file.
  
  Parameters:
  
  source - The source file.
  
  target - The target file or directory (will be deleted first).
  
  Throws:
  
  java.io.IOException
  
  moveFile
  
  public static void moveFile(java.io.File source, java.io.File target) throws java.io.IOException
  
  Moves a file to a target location.
  
  Parameters:
  
  source - The source file.
  
  target - The target file location (will be deleted first, if it exists).
  
  Throws:
  
  java.io.IOException
  
  internalMoveFile
  
  protected static void internalMoveFile(java.io.File source, java.io.File target) throws java.io.IOException
  
  Moves a file to a target location.
  
  Parameters:
  
  source - The source file.
  
  target - The target file location (will be deleted first, if it exists).
  
  Throws:
  
  java.io.IOException
  
  readFile
  
  public static byte[] readFile(java.io.File file) throws java.io.IOException
  
  Reads a file into memory (byte array). Note: This only works for files smaller than 2GiB.
  
  Parameters:
  
  file - The file.
  
  Returns:
  
  Contents of the file.
  
  Throws:
  
  java.io.IOException - Exception on IO errors.
  
  readStream
  
  public static byte[] readStream(java.io.InputStream is) throws java.io.IOException
  
  Reads an input stream into memory (byte array). Note: This only works for files smaller than 2GiB.
  
  Parameters:
  
  is - The InputStream.
  
  Returns:
  
  Contents of the file.
  
  Throws:
  
  java.io.IOException - Exception on IO errors.
  
  readStream
  
  public static void readStream(byte[] buf, java.io.InputStream is)
  
  Fills buffer from an input stream. Note: This only works for sizes smaller than 2GiB.
  
  Parameters:
  
  buf - The buffer.
  
  is - The InputStream.
  
  readStream
  
  public static void readStream(byte[] buf, int off, int len, java.io.InputStream is)
  
  Reads part of an input stream into a buffer. Note: This only works for sizes smaller than 2GiB.
  
  Parameters:
  
  buf - The buffer.
  
  off - Offset for writing into the buffer.
  
  len - Number of bytes to read from stream, set to -1 to fill the rest of the buffer.
  
  is - The InputStream.
  
  readStream
  
  public static void readStream(byte[] buf, int off, int len, java.io.InputStream is, long skip)
  
  Reads part of an input stream into a buffer. Note: This only works for sizes smaller than 2GiB.
  
  Parameters:
  
  buf - The buffer.
  
  off - Offset for writing into the buffer.
  
  len - Number of bytes to read from stream, set to -1 to fill the rest of the buffer.
  
  is - The InputStream.
  
  skip - Skip this number of bytes from the stream before reading, skip<=0 for no skip.
  
  readStreamLines
  
  public static java.lang.String[] readStreamLines(java.io.InputStream is)
  
  Reads a (text) stream line-wise and returns lines as array.
  
  Parameters:
  
  is - InputStream.
  
  Returns:
  
  Array of lines.
  
  readStreamLines
  
  public static java.lang.String[] readStreamLines(java.io.InputStream is, java.nio.charset.Charset encoding)
  
  Reads a (text) stream line-wise and returns lines as array.
  
  Parameters:
  
  is - InputStream.
  
  encoding - Character encoding, defaults to UTF8 if null.
  
  Returns:
  
  Array of lines.
  
  close
  
  public static void close(java.net.Socket socket)
  
  Attempt to close a Socket (e.g. on error recovery) ignoring any error. (compatibility for Java versions below 7 where Closeable exists but is not implemented by Socket because stupid)
  
  Parameters:
  
  socket - The socket.
  
  close
  
  public static void close(java.io.Closeable closeable)
  
  Attempt to close a Closeable (e.g. on error recovery) ignoring any error.
  
  Parameters:
  
  closeable - The closeable.
  
  getStackTrace
  
  public static java.lang.String getStackTrace(java.lang.Exception e)
  
  Get the exception stack trace as string.
  
  Parameters:
  
  e - The exception.
  
  Returns:
  
  The string.
  
  log2
  
  public static int log2(int num)
  
  Fast way to compute log2(x).
  
  Parameters:
  
  num - The number.
  
  Returns:
  
  The log2(x).
  
  log2
  
  public static int log2(long num)
  
  Fast way to compute log2(x).
  
  Parameters:
  
  num - The number.
  
  Returns:
  
  The log2(x).
  
  computeFileHash
  
  public static byte[] computeFileHash(java.lang.String filename)
  
  Compute a file hash.
  
  Parameters:
  
  filename - The filename.
  
  Returns:
  
  The hash.
  
  computeFileHash
  
  public static byte[] computeFileHash(java.lang.String filename, java.lang.String algorithm)
  
  Compute a file hash.
  
  Parameters:
  
  filename - The filename.
  
  algorithm - The hash algorithm.
  
  Returns:
  
  The hash.
  
  firstToUpperCase
  
  public static java.lang.String firstToUpperCase(java.lang.String str)
  
  Convert a string to the same string with first letter in upper case.
  
  Parameters:
  
  str - The string.
  
  Returns:
  
  The string with first letter in uppercase.
  
  getMacAddress
  
  public static java.lang.String getMacAddress()
  
  Get the mac address.
  
  Returns:
  
  The mac address.
  
  getMacAddresses
  
  public static java.lang.String[] getMacAddresses()
  
  Get the mac address.
  
  Returns:
  
  The mac address.
  
  createRegexFromGlob
  
  public static java.util.regex.Pattern createRegexFromGlob(java.lang.String glob)
  
  Create a regex from a normal bnf pattern.
  
  readFile
  
  public static java.lang.String readFile(java.lang.String filename)
  
  Read a file to string.
  
  Parameters:
  
  filename - The file name.
  
  Returns:
  
  The string.
  
  readFile
  
  public static java.lang.String readFile(java.lang.String filename, java.lang.ClassLoader cl)
  
  Read a file to string.
  
  Parameters:
  
  filename - The file name.
  
  Returns:
  
  The string.
  
  writeFile
  
  public static void writeFile(java.lang.String val, java.lang.String filename)
  
  Write a string to a file.
  
  Parameters:
  
  val - The string to write.
  
  filename - The file name.
  
  writeFile
  
  public static void writeFile(java.lang.String val, java.lang.String filename, java.lang.String charset)
  
  Write a string to a file.
  
  Parameters:
  
  val - The string to write.
  
  filename - The file name.
  
  getAppDir
  
  public static java.io.File getAppDir()
  
  Gets the "application directory", normally the current working directory, except in Android.
  
  Returns:
  
  Application directory.
  
  loadBinary
  
  public static java.lang.String loadBinary(java.lang.String file)
  
  Load a binary file as base 64 string, e.g. for embedded html images.
  
  removeBOM
  
  public static java.lang.String removeBOM(java.lang.String text)
  
  Remove BOM from UTF text.
  
  Parameters:
  
  text - The text.
  
  Returns:
  
  The corrected string.
  
  isUTF8
  
  public static boolean isUTF8(byte[] bytes)
  
  Test if starts with UTF-8 BOM.
  
  Parameters:
  
  bytes - The text.
  
  Returns:
  
  Bytes without BOM.
  
  toUTF8
  
  public static java.lang.String toUTF8(byte[] bytes)
  
  Returns a UTF8 byte array as string.
  
  Parameters:
  
  bytes - The bytes.
  
  Returns:
  
  The string.
  
  getExceptionStacktrace
  
  public static java.lang.String getExceptionStacktrace(java.lang.Throwable e)
  
  Get the exception stacktrace.
  
  Parameters:
  
  e - The exception.
  
  Returns:
  
  The exception stacktrace.
  
  throwUnchecked
  
  public static java.lang.RuntimeException throwUnchecked(java.lang.Throwable t) throws java.lang.Error, java.lang.RuntimeException
  
  Convert a throwable to an unchecked exception (i.e. error or runtime exception). Also unpacks InvocationTargeteException and ErrorException.
  
  Parameters:
  
  t - The throwable.
  
  Returns:
  
  Dummy return value as exception will be thrown inside. Use as throw SUtil.throwUnchecked(t); to avoid compilation errors.
  
  Throws:
  
  java.lang.Error
  
  java.lang.RuntimeException
  
  guessContentTypeByFilename
  
  public static java.lang.String guessContentTypeByFilename(java.lang.String name)
  
  Guess the mime type by the file name.
  
  Parameters:
  
  name - The filename
  
  Returns:
  
  The mime type.
  
  containsDigit
  
  public static boolean containsDigit(java.lang.String s)
  
  Test if a string contains a digit.
  
  Parameters:
  
  s - The string.
  
  Returns:
  
  True, if the string contains a digit.
  
  loadHashCache
  
  protected static LRU<java.lang.String,Tuple2<java.lang.Long,java.lang.String>> loadHashCache()
  
  Load the stored hashes.
  
  getLastModified
  
  public static long getLastModified(java.io.File f)
  
  Recursively get the newest last modified of a file or directory tree.
  
  getLastModified
  
  public static long getLastModified(java.io.File f, boolean nocache)
  
  Recursively get the newest last modified of a file or directory tree.
  
  hashDirectory
  
  protected static void hashDirectory(java.lang.String root, java.io.File dir, java.security.MessageDigest md) throws java.lang.Exception
  
  Get the hash code of a directory recursively.
  
  Throws:
  
  java.lang.Exception
  
  hashStream
  
  protected static void hashStream(java.io.InputStream is, java.security.MessageDigest md) throws java.lang.Exception
  
  Throws:
  
  java.lang.Exception
  
  writeDirectory
  
  public static void writeDirectory(java.io.File dir, java.io.OutputStream out)
  
  Write a directory as jar to an output stream.
  
  writeDirectory
  
  protected static void writeDirectory(java.lang.String prefix, java.io.File dir, java.util.zip.ZipOutputStream zos, byte[] buf) throws java.lang.Exception
  
  Write a directory as jar to an output stream.
  
  Throws:
  
  java.lang.Exception
  
  notNull
  
  public static <T> java.util.List<T> notNull(java.util.List<T> list)
  
  Helper method to allow iterating over possibly null lists.
  
  notNull
  
  public static <T> java.util.Collection<T> notNull(java.util.Collection<T> coll)
  
  Helper method to allow iterating over possibly null collections.
  
  notNull
  
  public static <T> java.util.Set<T> notNull(java.util.Set<T> set)
  
  Helper method to allow iterating over possibly null sets.
  
  notNull
  
  public static <K,E> java.util.Map<K,E> notNull(java.util.Map<K,E> map)
  
  Helper method to allow iterating over possibly null maps.
  
  findKeyForValue
  
  public static <K,V> K findKeyForValue(java.util.Map<K,V> map, V value)
  
  Helper to find first matching key (if any) for a value (identity check).
  
  getStackTraceString
  
  public static final java.lang.String getStackTraceString(java.lang.String topline, java.lang.StackTraceElement[] trace)
  
  Converts a stack trace array to a printable string.
  
  Parameters:
  
  topline - The first line to be printed with info, if needed.
  
  trace - The stack trace.
  
  Returns:
  
  Printable string.
  
  getOutputDirsExpression
  
  public static java.lang.String getOutputDirsExpression(java.lang.String projectroot, boolean includeTestClasses)
  
  Try to find the correct classpath root directories for current build tool chain. Tries bin (e.g. eclipse), build/classes/main (gradle), target/classes (maven) and uses the directory with the newest file.
  
  Returns:
  
  an expression string of the fpr 'new String[]{...}'.
  
  findOutputDirs
  
  public static java.io.File[] findOutputDirs(java.lang.String projectroot, boolean includeTestClasses)
  
  Try to find the correct classpath root directories for current build tool chain. Tries bin and bin/main (e.g. eclipse), build/classes/main (gradle), target/classes (maven) and uses the directory with the newest file.
  
  findDirForProject
  
  public static java.io.File findDirForProject(java.lang.String project)
  
  Find dir for given project. This allows to run under different environments with different working paths (e.g. intellij by default uses WP jadex/ while gradle uses WP jadex/jadex-integration-test
  
  Parameters:
  
  project -
  
  Returns:
  
  File
  
  diffuseStringHash
  
  public static final int diffuseStringHash(java.lang.String s)
  
  Generate a diffuse string hash.
  
  Parameters:
  
  s - The string.
  
  Returns:
  
  The hash.
  
  inndexOfLastUpperCaseCharacter
  
  public static int inndexOfLastUpperCaseCharacter(java.lang.String str)
  
  Find index of last upper case letter.
  
  Parameters:
  
  str - The string.
  
  Returns:
  
  The index (or -1).
  
  isWindows
  
  public static final boolean isWindows()
  
  Tests if the OS is Windows.
  
  Returns:
  
  True, if Windows.
  
  replaceLast
  
  public static java.lang.String replaceLast(java.lang.String string, java.lang.String toreplace, java.lang.String replacement)
  
  Replace the last occurrence of a substring.
  
  Parameters:
  
  string - The string
  
  toreplace - The substring to replace.
  
  replacement - The new substring
  
  Returns:
  
  The new string.
  
  getGeoIPLocation
  
  public static java.lang.String getGeoIPLocation()
  
  Determine the location of the local computer using some GeoIP web service.
  
  Returns:
  
  The location as [
  
  ensureNonblockingSecureRandom
  
  public static void ensureNonblockingSecureRandom()
  
  Ensures SecureRandom use is nonblocking in all cases. Must be called before first new SecureRandom() use. Safe to call multiple times. Note: On certain systems like Linux, SecureRandom ends up using /dev/random as a entropy source for initialization. This has the severe disadvantage of blocking indefinitely once the entropy pool "runs out of entropy" (whatever that means). Calling this method prevents this undesirable behavior.
  
  getMacAddressAsString
  
  public static java.lang.String getMacAddressAsString(byte[] mac)
  
  Convert a mac address to a string.
  
  Parameters:
  
  mac - The address.
  
  Returns:
  
  The string.

Class SUtil

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

JADEXDIR

LF

BYTE_UNITS

BYTEFORMATTER1

BYTEFORMATTER2

BYTEFORMATTER3

CONVERT_ALL

CONVERT_ALL_EXCEPT_AMP

CONVERT_NONE

NULL

ASCII

UTF8

ISO8859_1

FAST_RANDOM

SECURE_RANDOM

MIMETYPES

SDF

SDF2

SDF3

ISO8601UTCFALLBACKS

ISO8601ZONEDFALLBACKS

appdir

htmlwraps

seps

EMPTY_ENUMERATION

EMPTY_STRING_ARRAY

EMPTY_CLASS_ARRAY

EMPTY_OBJECT_ARRAY

RESOURCEINFO_MAPPERS

DEFTIMEOUT

DEFTIMEOUT_DEFAULT

convidcnt

OUT_FOR_SYSTEM_IN

NIS

NISTIME

macs

HASHES

LASTMODS

ID_CHARS

Constructor Detail

SUtil

Method Detail

getSecureRandom

getStringArray

joinArrays

joinArbitraryArrays

cutArrays

substractArrays

arrayToList

arrayToSet

iteratorToList

iteratorToList

iteratorToArray

arrayContains

getArrayDimension

equals

arrayEmptyOrNull

arrayEquals

arrayHashCode

arrayToString

convertMapKeysToLowercase

getSingular

getPlural

compareTo

isInRange

removeExtension

wrapText

wrapText

makeConform

makeConform

stripTags

makeEnglishConform

camelToSnakeCase