Some utilities to make our lives easier. More...

Collaboration diagram for org.openslx.imagemaster.util.Util:

Static Public Member Functions
static void	notNullFatal (Object something, String message)
	Check if the given object is null, abort program if true. More...

static void	notNullFatal (int number, String message)
	Check if the given object is null, abort program if true. More...

static void	notNullOrEmptyFatal (String something, String message)
	Check if String is null or empty, abort program if so. More...

static int	randomInt (int n)
	Return a random integer in the range of 0 (inclusive) and n (exclusive). More...

static void	deleteFolder (File folder)
	Remove a folder and all contents. More...

static boolean	isEmpty (String str)

static boolean	isEmpty (String str, String message, Logger logger)

static int	tryToParseInt (String s)
	Tries to parse an int. More...

static int	tryToParseInt (String s, int defaultValue)
	Tries to parse an int. More...

static BigInteger	tryToParseBigInt (String s)
	Tries to parse a bigint. More...

static int	getNumberOfBlocks (long fileSize, int blockSize)

static String	sanitizeFileName (String fileName)

static boolean	keysEqual (Key k1, Key k2)
	Checks whether the two given keys are equal. More...

static String	getRelativePath (File absolutePath, File parentDir)

static boolean	isUUID (String id)

Static Private Attributes
static Logger	LOGGER = LogManager.getLogger( Util.class )

static final Random	random = new Random()
	Static Random instance. More...

Detailed Description

Some utilities to make our lives easier.

Definition at line 18 of file Util.java.

Member Function Documentation

static void org.openslx.imagemaster.util.Util.deleteFolder ( File folder )

static

Remove a folder and all contents.

Parameters

folder

Definition at line 108 of file Util.java.

static int org.openslx.imagemaster.util.Util.getNumberOfBlocks	(	long	fileSize,
		int	blockSize
	)

static

Definition at line 178 of file Util.java.

static String org.openslx.imagemaster.util.Util.getRelativePath	(	File	absolutePath,
		File	parentDir
	)

static

Definition at line 222 of file Util.java.

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static boolean org.openslx.imagemaster.util.Util.isEmpty ( String str )

static

Definition at line 123 of file Util.java.

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static boolean org.openslx.imagemaster.util.Util.isEmpty	(	String	str,
		String	message,
		Logger	logger
	)

static

Definition at line 128 of file Util.java.

static boolean org.openslx.imagemaster.util.Util.isUUID ( String id )

static

Definition at line 238 of file Util.java.

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static boolean org.openslx.imagemaster.util.Util.keysEqual	(	Key	k1,
		Key	k2
	)

static

Checks whether the two given keys are equal.

Works for public and private keys.

Parameters

k1	first key
k2	second key

Returns: true if equal

Definition at line 202 of file Util.java.

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static void org.openslx.imagemaster.util.Util.notNullFatal	(	Object	something,
		String	message
	)

static

Check if the given object is null, abort program if true.

An optional message to be printed can be passed. A stack trace will be printed, too. Finally the application terminates with exit code 2.

This comes in handy if something must not be null, and you want user friendly output. A perfect example would be reading settings from a config file. You can use this on mandatory fields.

Parameters

something	the object to compare to null
message	the message to be printed if something is null

Definition at line 36 of file Util.java.

static void org.openslx.imagemaster.util.Util.notNullFatal	(	int	number,
		String	message
	)

static

Check if the given object is null, abort program if true.

An optional message to be printed can be passed. A stack trace will be printed, too. Finally the application terminates with exit code 2.

This comes in handy if something must not be null, and you want user friendly output. A perfect example would be reading settings from a config file. You can use this on mandatory fields.

Parameters

something	the object to compare to null
message	the message to be printed if something is null

Definition at line 58 of file Util.java.

static void org.openslx.imagemaster.util.Util.notNullOrEmptyFatal	(	String	something,
		String	message
	)

static

Check if String is null or empty, abort program if so.

An optional message to be printed can be passed. A stack trace will be printed, too. Finally the application terminates with exit code 2.

Parameters

something	The string you want to check
message	The message to be printed if "something" is null or empty

Definition at line 76 of file Util.java.

static int org.openslx.imagemaster.util.Util.randomInt ( int n )

static

Return a random integer in the range of 0 (inclusive) and n (exclusive).

Uses the internal static instance of Random, so you don't have to deal with instances everywhere.

Parameters

n	the upper bound (exclusive)

Returns: number between 0 (inclusive) and n (exclusive)

Definition at line 98 of file Util.java.

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static String org.openslx.imagemaster.util.Util.sanitizeFileName ( String fileName )

static

Definition at line 186 of file Util.java.

static BigInteger org.openslx.imagemaster.util.Util.tryToParseBigInt ( String s )

static

Tries to parse a bigint.

Returns null on error.

Parameters

s	The strig to parse

Returns: The parsed bigint

Definition at line 169 of file Util.java.

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static int org.openslx.imagemaster.util.Util.tryToParseInt ( String s )

static

Tries to parse an int.

Returns 0 on error.

Parameters

s	The strig to parse

Returns: The parsed int or 0 on error

Definition at line 142 of file Util.java.

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static int org.openslx.imagemaster.util.Util.tryToParseInt	(	String	s,
		int	defaultValue
	)

static

Tries to parse an int.

Returns defaultValue on error.

Parameters

s	The strig to parse
defaultValue	value to be returned if s is not parsable

Returns: The parsed int

Definition at line 154 of file Util.java.

Member Data Documentation

Logger org.openslx.imagemaster.util.Util.LOGGER = LogManager.getLogger( Util.class )

staticprivate

Definition at line 21 of file Util.java.

final Random org.openslx.imagemaster.util.Util.random = new Random()

staticprivate

Static Random instance.

Definition at line 88 of file Util.java.

The documentation for this class was generated from the following file:

org/openslx/imagemaster/util/Util.java

Static Public Member Functions

Static Private Attributes

Detailed Description

Member Function Documentation

Member Data Documentation