Package jodd.util

Class RandomString

java.lang.Object

jodd.util.RandomString

public class RandomString
extends Object

Class that generates random strings.

Field Summary

Fields

Modifier and Type	Field	Description
protected static final char[]	ALPHA_NUMERIC_RANGE
protected static final char[]	ALPHA_RANGE
protected static final RandomString	INSTANCE
protected final SecureRandom	rnd

Constructor Summary

Constructors

Constructor	Description
RandomString()	Creates new random string.

Method Summary

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

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 SecureRandom rnd

Constructor Details

RandomString

public RandomString()

Creates new random string.

Method Details

get

public static RandomString get()

Returns default instance of RandomString.

random

public 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 String random(int count,
 String chars)

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

random

public 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 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 String randomNumeric(int count)

Creates random string that consist only of numbers.

randomRanges

public 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 String randomAlpha(int count)

Creates random string of characters.

randomAlphaNumeric

public String randomAlphaNumeric(int count)

Creates random string of characters and digits.

randomBase64

public String randomBase64(int count)

Creates random string that contains only Base64 characters.