org.apache.commons.lang.math
Class RandomUtils

java.lang.Object
  org.apache.commons.lang.math.RandomUtils

public class RandomUtils

extends Object

RandomUtils is a wrapper that supports all possible Random methods via the Math.random() method and its system-wide Random object.

Since:

2.0

Version:

$Id: RandomUtils.java,v 1.6 2003/08/18 02:22:24 bayard Exp $

Author:

Henri Yandell

Field Summary

static Random

JVM_RANDOM

Constructor Summary

RandomUtils()

Method Summary

static boolean	nextBoolean() Returns the next pseudorandom, uniformly distributed boolean value from the Math.random() sequence.
static boolean	nextBoolean(Random rnd)
static double	nextDouble() Synonymous to the Math.random() call.
static double	nextDouble(Random rnd)
static float	nextFloat() Returns the next pseudorandom, uniformly distributed float value between 0.0 and 1.0 from the Math.random() sequence.
static float	nextFloat(Random rnd)
static int	nextInt() Returns the next pseudorandom, uniformly distributed int value from the Math.random() sequence.
static int	nextInt(int n) Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive), from the Math.random() sequence.
static int	nextInt(Random rnd)
static int	nextInt(Random rnd, int n)
static long	nextLong() Returns the next pseudorandom, uniformly distributed long value from the Math.random() sequence.
static long	nextLong(Random rnd)

Methods inherited from class java.lang.Object

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

Field Detail

JVM_RANDOM

public static final Random JVM_RANDOM

Constructor Detail

RandomUtils

public RandomUtils()

Method Detail

nextInt

public static int nextInt()

Returns the next pseudorandom, uniformly distributed int value from the Math.random() sequence.

Returns:

the random int

nextInt

public static int nextInt(Random rnd)

nextInt

public static int nextInt(int n)

Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive), from the Math.random() sequence.

Parameters:

n - the specified exclusive max-value

Returns:

the random int

nextInt

public static int nextInt(Random rnd,
                          int n)

nextLong

public static long nextLong()

Returns the next pseudorandom, uniformly distributed long value from the Math.random() sequence.

Returns:

the random long

nextLong

public static long nextLong(Random rnd)

nextBoolean

public static boolean nextBoolean()

Returns the next pseudorandom, uniformly distributed boolean value from the Math.random() sequence.

Returns:

the random boolean

nextBoolean

public static boolean nextBoolean(Random rnd)

nextFloat

public static float nextFloat()

Returns the next pseudorandom, uniformly distributed float value between 0.0 and 1.0 from the Math.random() sequence.

Returns:

the random float

nextFloat

public static float nextFloat(Random rnd)

nextDouble

public static double nextDouble()

Synonymous to the Math.random() call.

Returns:

the random double

nextDouble

public static double nextDouble(Random rnd)