org.apache.commons.lang.math

Class 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.
Version:
$Id: RandomUtils.java,v 1.6 2003/08/18 02:22:24 bayard Exp $
Author:
Henri Yandell
Since:
2.0

Field Summary

static Random
JVM_RANDOM

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(Random rnd)
static int
nextInt(Random rnd, int n)
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 long
nextLong()
Returns the next pseudorandom, uniformly distributed long value from the Math.random() sequence.
static long
nextLong(Random rnd)

Field Details

JVM_RANDOM

public static final Random JVM_RANDOM

Method Details

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)

nextDouble

public static double nextDouble()
Synonymous to the Math.random() call.
Returns:
the random double

nextDouble

public static double nextDouble(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)

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(Random rnd,
                          int n)

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

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)

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