org.symphonyoss.s2.fugue.di.component.impl

Class RandomNumberProvider

java.lang.Object

org.symphonyoss.s2.fugue.di.component.impl.RandomNumberProvider

All Implemented Interfaces:

IRandomNumberProvider, IComponent

public class RandomNumberProvider
extends Object
implements IRandomNumberProvider

A component which provides an instance of a SecureRandom.

Author:

bruce.skingle

Constructor Summary

Constructors

Constructor and Description
RandomNumberProvider()

Method Summary

Modifier and Type	Method and Description
ComponentDescriptor	getComponentDescriptor() Create a component descriptor which describes the dependencies and provided interfaces of this component.
boolean	nextBoolean() Returns a pseudorandom, uniformly distributed boolean value.
void	nextBytes(byte[] bytes) Generates random bytes and places them into a user-supplied byte array.
double	nextDouble() Returns a pseudorandom, uniformly distributed double value between 0.0 and 1.0.
float	nextFloat() Returns a pseudorandom, uniformly distributed float value between 0.0 and 1.0.
double	nextGaussian() Returns a pseudorandom, Gaussian ("normally") distributed double value with mean 0.0 and standard deviation 1.0.
int	nextInt() Returns a pseudorandom, uniformly distributed int value.
int	nextInt(int bound) Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive).
long	nextLong() Returns a pseudorandom, uniformly distributed long value.

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomNumberProvider

public RandomNumberProvider()

Method Detail

getComponentDescriptor

public ComponentDescriptor getComponentDescriptor()

Description copied from interface: IComponent

Create a component descriptor which describes the dependencies and provided interfaces of this component. This method may create the descriptor and will only be called once. A component sub-class should call super.getComponentDescriptor(). ComponentDescriptor has a fluent interface.

Specified by:

getComponentDescriptor in interface IComponent

Returns:

A ComponentDescriptor for the component.

nextInt

public int nextInt()

Description copied from interface: IRandomNumberProvider

Returns a pseudorandom, uniformly distributed int value. The general contract of nextInt is that one int value is pseudorandomly generated and returned. All 2³² possible int values are produced with (approximately) equal probability.

Specified by:

nextInt in interface IRandomNumberProvider

Returns:

a pseudorandom, uniformly distributed int value

nextInt

public int nextInt(int bound)

Description copied from interface: IRandomNumberProvider

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

Specified by:

nextInt in interface IRandomNumberProvider

Parameters:

bound - the upper bound (exclusive). Must be positive.

Returns:

a pseudorandom, uniformly distributed int value between zero (inclusive) and bound (exclusive)

nextLong

public long nextLong()

Description copied from interface: IRandomNumberProvider

Returns a pseudorandom, uniformly distributed long value. The general contract of nextInt is that one long value is pseudorandomly generated and returned. All 2⁶⁴ possible long values are produced with (approximately) equal probability.

Specified by:

nextLong in interface IRandomNumberProvider

Returns:

a pseudorandom, uniformly distributed int value

nextBoolean

public boolean nextBoolean()

Description copied from interface: IRandomNumberProvider

Returns a pseudorandom, uniformly distributed boolean value.

Specified by:

nextBoolean in interface IRandomNumberProvider

Returns:

a pseudorandom, uniformly distributed boolean value

nextBytes

public void nextBytes(byte[] bytes)

Description copied from interface: IRandomNumberProvider

Generates random bytes and places them into a user-supplied byte array. The number of random bytes produced is equal to the length of the byte array.

Specified by:

nextBytes in interface IRandomNumberProvider

Parameters:

bytes - the byte array to fill with random bytes

nextFloat

public float nextFloat()

Description copied from interface: IRandomNumberProvider

Returns a pseudorandom, uniformly distributed float value between 0.0 and 1.0.

Specified by:

nextFloat in interface IRandomNumberProvider

Returns:

a pseudorandom, uniformly distributed float value between 0.0 and 1.0

nextDouble

public double nextDouble()

Description copied from interface: IRandomNumberProvider

Returns a pseudorandom, uniformly distributed double value between 0.0 and 1.0.

Specified by:

nextDouble in interface IRandomNumberProvider

Returns:

a pseudorandom, uniformly distributed double value between 0.0 and 1.0

nextGaussian

public double nextGaussian()

Description copied from interface: IRandomNumberProvider

Returns a pseudorandom, Gaussian ("normally") distributed double value with mean 0.0 and standard deviation 1.0.

Specified by:

nextGaussian in interface IRandomNumberProvider

Returns:

a pseudorandom, Gaussian ("normally") distributed double value with mean 0.0 and standard deviation 1.0