org.norther.tammi.acorn.security
Class RNG

java.lang.Object
  org.norther.tammi.acorn.security.RNG

public abstract class RNG
extends Object

A static random id and number generator.

Author:

Ilkka Priha

Field Summary

static int

DEFAULT_LENGTH The default length of the id.

Constructor Summary

RNG()

Method Summary

static String	generate() Generates a random id of the default length.
static String	generate(int n) Generates a random id of n chars.
static SecureRandom	getSecureRandom() Gets the randomizer applied.
static long	longCount() Returns the long count.
static void	nextBytes(byte[] random) Returns the specified number of random bytes.
static int	nextCount() Returns the next count.
static int	nextInt() Returns a random int.
static int	nextInt(int n) Returns a random int within 0 - n.
static long	nextLong() Returns a random long.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_LENGTH

public static final int DEFAULT_LENGTH

The default length of the id.

See Also:

Constant Field Values

Constructor Detail

RNG

public RNG()

Method Detail

generate

public static final String generate()

Generates a random id of the default length.

Returns:

the random id.

generate

public static final String generate(int n)

Generates a random id of n chars.

Parameters:

n - the number of chars.

Returns:

the random id.

longCount

public static final long longCount()

Returns the long count.

Returns:

the long count.

nextCount

public static final int nextCount()

Returns the next count.

Returns:

the count.

nextInt

public static final int nextInt()

Returns a random int.

Returns:

the int.

nextInt

public static final int nextInt(int n)

Returns a random int within 0 - n.

Parameters:

n - the limit.

Returns:

the int.

nextLong

public static final long nextLong()

Returns a random long.

Returns:

the long.

nextBytes

public static final void nextBytes(byte[] random)

Returns the specified number of random bytes.

Parameters:

random - the byte array to fill.

getSecureRandom

public static final SecureRandom getSecureRandom()

Gets the randomizer applied.

Returns:

the randomizer.