jodd.util

Class RandomString

java.lang.Object

jodd.util.RandomString

public class RandomString
extends java.lang.Object

Class that generates random strings.

Field Summary

Fields

Modifier and Type	Field and Description
protected static char[]	ALPHA_NUMERIC_RANGE
protected static char[]	ALPHA_RANGE
protected static RandomString	INSTANCE
protected java.util.Random	rnd

Constructor Summary

Constructors

Constructor and Description
RandomString() Creates new random string.
RandomString(long seed) Creates new random string with given seed.
RandomString(java.util.Random rnd) Creates new random string with given random object, so random strings can be repeated.

Method Summary

Methods

Modifier and Type	Method and Description
static RandomString	getInstance() Returns default instance of RandomString.
java.lang.String	random(int count, char[] chars) Creates random string whose length is the number of characters specified.
java.lang.String	random(int count, char start, char end) Creates random string whose length is the number of characters specified.
java.lang.String	random(int count, java.lang.String chars) Creates random string whose length is the number of characters specified.
java.lang.String	randomAlpha(int count) Creates random string of characters.
java.lang.String	randomAlphaNumeric(int count) Creates random string of characters and digits.
java.lang.String	randomAscii(int count) Creates random string whose length is the number of characters specified.
java.lang.String	randomBase64(int count) Creates random string that contains only Base64 characters.
java.lang.String	randomNumeric(int count) Creates random string that consist only of numbers.
java.lang.String	randomRanges(int count, char... ranges) Creates random string whose length is the number of characters specified.

Methods inherited from class java.lang.Object

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

Field Detail

ALPHA_RANGE

protected static final char[] ALPHA_RANGE

ALPHA_NUMERIC_RANGE

protected static final char[] ALPHA_NUMERIC_RANGE

INSTANCE

protected static final RandomString INSTANCE

rnd

protected final java.util.Random rnd

Constructor Detail

RandomString

public RandomString()

Creates new random string.

RandomString

public RandomString(java.util.Random rnd)

Creates new random string with given random object, so random strings can be repeated.

RandomString

public RandomString(long seed)

Creates new random string with given seed.

Method Detail

getInstance

public static RandomString getInstance()

Returns default instance of RandomString.

random

public java.lang.String random(int count,
                      char[] chars)

Creates random string whose length is the number of characters specified. Characters are chosen from the set of characters specified.

random

public java.lang.String random(int count,
                      java.lang.String chars)

Creates random string whose length is the number of characters specified. Characters are chosen from the set of characters specified.

random

public java.lang.String random(int count,
                      char start,
                      char end)

Creates random string whose length is the number of characters specified. Characters are chosen from the provided range.

randomAscii

public java.lang.String randomAscii(int count)

Creates random string whose length is the number of characters specified. Characters are chosen from the set of characters whose ASCII value is between 32 and 126 (inclusive).

randomNumeric

public java.lang.String randomNumeric(int count)

Creates random string that consist only of numbers.

randomRanges

public java.lang.String randomRanges(int count,
                            char... ranges)

Creates random string whose length is the number of characters specified. Characters are chosen from the multiple sets defined by range pairs. All ranges must be in acceding order.

randomAlpha

public java.lang.String randomAlpha(int count)

Creates random string of characters.

randomAlphaNumeric

public java.lang.String randomAlphaNumeric(int count)

Creates random string of characters and digits.

randomBase64

public java.lang.String randomBase64(int count)

Creates random string that contains only Base64 characters.