org.multiverse.utils

Class ThreadLocalRandom

java.lang.Object

java.util.Random

org.multiverse.utils.ThreadLocalRandom

All Implemented Interfaces:

Serializable

public class ThreadLocalRandom
extends Random

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ThreadLocalRandom() Constructor called only by localRandom.initialValue.

Method Summary

Modifier and Type	Method and Description
static ThreadLocalRandom	current() Returns the current thread's ThreadLocalRandom.
protected int	next(int bits)
double	nextDouble(double n) Returns a pseudorandom, uniformly distributed double value between 0 (inclusive) and the specified value (exclusive).
double	nextDouble(double least, double bound) Returns a pseudorandom, uniformly distributed value between the given least value (inclusive) and bound (exclusive).
int	nextInt(int least, int bound) Returns a pseudorandom, uniformly distributed value between the given least value (inclusive) and bound (exclusive).
long	nextLong(long n) Returns a pseudorandom, uniformly distributed value between 0 (inclusive) and the specified value (exclusive).
long	nextLong(long least, long bound) Returns a pseudorandom, uniformly distributed value between the given least value (inclusive) and bound (exclusive).
void	setSeed(long seed) Throws UnsupportedOperationException.

Methods inherited from class java.util.Random

doubles, doubles, doubles, doubles, ints, ints, ints, ints, longs, longs, longs, longs, nextBoolean, nextBytes, nextDouble, nextFloat, nextGaussian, nextInt, nextInt, nextLong

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadLocalRandom

public ThreadLocalRandom()

Constructor called only by localRandom.initialValue. We rely on the fact that the superclass no-arg constructor invokes setSeed exactly once to initialize.

Method Detail

current

public static ThreadLocalRandom current()

Returns the current thread's ThreadLocalRandom.

Returns:

the current thread's ThreadLocalRandom

setSeed

public void setSeed(long seed)

Throws UnsupportedOperationException. Setting seeds in this generator is not supported.

Overrides:

setSeed in class Random

Throws:

UnsupportedOperationException - always

next

protected int next(int bits)

Overrides:

next in class Random

nextInt

public int nextInt(int least,
                   int bound)

Returns a pseudorandom, uniformly distributed value between the given least value (inclusive) and bound (exclusive).

Parameters:

least - the least value returned

bound - the upper bound (exclusive)

Returns:

the next value

Throws:

IllegalArgumentException - if least greater than or equal to bound

nextLong

public long nextLong(long n)

Returns a pseudorandom, uniformly distributed value between 0 (inclusive) and the specified value (exclusive).

Parameters:

n - the bound on the random number to be returned. Must be positive.

Returns:

the next value

Throws:

IllegalArgumentException - if n is not positive

nextLong

public long nextLong(long least,
                     long bound)

Returns a pseudorandom, uniformly distributed value between the given least value (inclusive) and bound (exclusive).

Parameters:

least - the least value returned

bound - the upper bound (exclusive)

Returns:

the next value

Throws:

IllegalArgumentException - if least greater than or equal to bound

nextDouble

public double nextDouble(double n)

Returns a pseudorandom, uniformly distributed double value between 0 (inclusive) and the specified value (exclusive).

Parameters:

n - the bound on the random number to be returned. Must be positive.

Returns:

the next value

Throws:

IllegalArgumentException - if n is not positive

nextDouble

public double nextDouble(double least,
                         double bound)

Returns a pseudorandom, uniformly distributed value between the given least value (inclusive) and bound (exclusive).

Parameters:

least - the least value returned

bound - the upper bound (exclusive)

Returns:

the next value

Throws:

IllegalArgumentException - if least greater than or equal to bound