org.apache.commons.rng.core.source32

Class JDKRandom

java.lang.Object

org.apache.commons.rng.core.BaseProvider

org.apache.commons.rng.core.source32.IntProvider

org.apache.commons.rng.core.source32.JDKRandom

All Implemented Interfaces:

RandomIntSource, RestorableUniformRandomProvider, UniformRandomProvider

public class JDKRandom
extends IntProvider

A provider that uses the Random.nextInt() method of the JDK's Random class as the source of randomness.

Caveat: All the other calls will be redirected to the methods implemented within this library.

The state of this source of randomness is saved and restored through the serialization of the Random instance.

Since:

1.0

Constructor Summary

Constructors

Constructor and Description
JDKRandom(Long seed) Creates an instance with the given seed.

Method Summary

Modifier and Type	Method and Description
protected byte[]	getStateInternal() Creates a snapshot of the RNG state.
int	next()
protected void	setStateInternal(byte[] s) Resets the RNG to the given state.

Methods inherited from class org.apache.commons.rng.core.source32.IntProvider

nextBoolean, nextBytes, nextBytes, nextDouble, nextFloat, nextInt, nextLong

Methods inherited from class org.apache.commons.rng.core.BaseProvider

checkIndex, checkStateSize, fillState, fillState, nextInt, nextLong, restoreState, saveState, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

JDKRandom

public JDKRandom(Long seed)

Creates an instance with the given seed.

Parameters:

seed - Initial seed.

Method Detail

next

public int next()

Specified by:

next in interface RandomIntSource

Specified by:

next in class IntProvider

Returns:

the next random value.

See Also:

Random.nextInt()

getStateInternal

protected byte[] getStateInternal()

Creates a snapshot of the RNG state.

Overrides:

getStateInternal in class BaseProvider

Returns:

the internal state.

setStateInternal

protected void setStateInternal(byte[] s)

Resets the RNG to the given state.

Overrides:

setStateInternal in class BaseProvider

Parameters:

s - State (previously obtained by a call to BaseProvider.getStateInternal()).

See Also:

BaseProvider.checkStateSize(byte[],int)