SynchronizedRandomGenerator (Apache Commons Math 3.6.1 API)

java.lang.Object
- org.apache.commons.math3.random.SynchronizedRandomGenerator

All Implemented Interfaces:

RandomGenerator
```
public class SynchronizedRandomGenerator
extends Object
implements RandomGenerator
```
Any RandomGenerator implementation can be thread-safe if it is used through an instance of this class. This is achieved by enclosing calls to the methods of the actual generator inside the overridden synchronized methods of this class.

Since:

3.1

Constructor Summary

Constructors
Constructor and Description

SynchronizedRandomGenerator(RandomGenerator rng)
Creates a synchronized wrapper for the given RandomGenerator instance.

Constructors
Constructor and Description
`SynchronizedRandomGenerator(RandomGenerator rng)` Creates a synchronized wrapper for the given `RandomGenerator` instance.

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`nextBoolean()` Returns the next pseudorandom, uniformly distributed `boolean` value from this random number generator's sequence.
`void`	`nextBytes(byte[] bytes)` Generates random bytes and places them into a user-supplied byte array.
`double`	`nextDouble()` Returns the next pseudorandom, uniformly distributed `double` value between `0.0` and `1.0` from this random number generator's sequence.
`float`	`nextFloat()` Returns the next pseudorandom, uniformly distributed `float` value between `0.0` and `1.0` from this random number generator's sequence.
`double`	`nextGaussian()` Returns the next pseudorandom, Gaussian ("normally") distributed `double` value with mean `0.0` and standard deviation `1.0` from this random number generator's sequence.
`int`	`nextInt()` Returns the next pseudorandom, uniformly distributed `int` value from this random number generator's sequence.
`int`	`nextInt(int n)` Returns a pseudorandom, uniformly distributed `int` value between 0 (inclusive) and the specified value (exclusive), drawn from this random number generator's sequence.
`long`	`nextLong()` Returns the next pseudorandom, uniformly distributed `long` value from this random number generator's sequence.
`void`	`setSeed(int seed)` Sets the seed of the underlying random number generator using an `int` seed.
`void`	`setSeed(int[] seed)` Sets the seed of the underlying random number generator using an `int` array seed.
`void`	`setSeed(long seed)` Sets the seed of the underlying random number generator using a `long` seed.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SynchronizedRandomGenerator
```
public SynchronizedRandomGenerator(RandomGenerator rng)
```
    Creates a synchronized wrapper for the given RandomGenerator instance.
    
    Parameters:
    rng - Generator whose methods will be called through their corresponding overridden synchronized version. To ensure thread-safety, the wrapped generator must not be used directly.
- Method Detail
  - setSeed
```
public void setSeed(int seed)
```
    Sets the seed of the underlying random number generator using an int seed.
    Sequences of values generated starting with the same seeds should be identical.
    
    Specified by:
    
    setSeed in interface RandomGenerator
    
    Parameters:
    seed - the seed value
  - setSeed
```
public void setSeed(int[] seed)
```
    Sets the seed of the underlying random number generator using an int array seed.
    Sequences of values generated starting with the same seeds should be identical.
    
    Specified by:
    
    setSeed in interface RandomGenerator
    
    Parameters:
    seed - the seed value
  - setSeed
```
public void setSeed(long seed)
```
    Sets the seed of the underlying random number generator using a long seed.
    Sequences of values generated starting with the same seeds should be identical.
    
    Specified by:
    
    setSeed in interface RandomGenerator
    
    Parameters:
    seed - the seed value
  - nextBytes
```
public void nextBytes(byte[] bytes)
```
    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 RandomGenerator
    
    Parameters:
    bytes - the non-null byte array in which to put the random bytes
  - nextInt
```
public int nextInt()
```
    Returns the next pseudorandom, uniformly distributed int value from this random number generator's sequence. All 2³² possible int values should be produced with (approximately) equal probability.
    
    Specified by:
    
    nextInt in interface RandomGenerator
    
    Returns:
    the next pseudorandom, uniformly distributed int value from this random number generator's sequence
  - nextInt
```
public int nextInt(int n)
```
    Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive), drawn from this random number generator's sequence.
    
    Specified by:
    
    nextInt in interface RandomGenerator
    
    Parameters:
    n - the bound on the random number to be returned. Must be positive.
    
    Returns:
    a pseudorandom, uniformly distributed int value between 0 (inclusive) and n (exclusive).
  - nextLong
```
public long nextLong()
```
    Returns the next pseudorandom, uniformly distributed long value from this random number generator's sequence. All 2⁶⁴ possible long values should be produced with (approximately) equal probability.
    
    Specified by:
    
    nextLong in interface RandomGenerator
    
    Returns:
    the next pseudorandom, uniformly distributed long value from this random number generator's sequence
  - nextBoolean
```
public boolean nextBoolean()
```
    Returns the next pseudorandom, uniformly distributed boolean value from this random number generator's sequence.
    
    Specified by:
    
    nextBoolean in interface RandomGenerator
    
    Returns:
    the next pseudorandom, uniformly distributed boolean value from this random number generator's sequence
  - nextFloat
```
public float nextFloat()
```
    Returns the next pseudorandom, uniformly distributed float value between 0.0 and 1.0 from this random number generator's sequence.
    
    Specified by:
    
    nextFloat in interface RandomGenerator
    
    Returns:
    the next pseudorandom, uniformly distributed float value between 0.0 and 1.0 from this random number generator's sequence
  - nextDouble
```
public double nextDouble()
```
    Returns the next pseudorandom, uniformly distributed double value between 0.0 and 1.0 from this random number generator's sequence.
    
    Specified by:
    
    nextDouble in interface RandomGenerator
    
    Returns:
    the next pseudorandom, uniformly distributed double value between 0.0 and 1.0 from this random number generator's sequence
  - nextGaussian
```
public double nextGaussian()
```
    Returns the next pseudorandom, Gaussian ("normally") distributed double value with mean 0.0 and standard deviation 1.0 from this random number generator's sequence.
    
    Specified by:
    
    nextGaussian in interface RandomGenerator
    
    Returns:
    the next pseudorandom, Gaussian ("normally") distributed double value with mean 0.0 and standard deviation 1.0 from this random number generator's sequence

Class SynchronizedRandomGenerator

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

SynchronizedRandomGenerator

Method Detail

setSeed

setSeed

setSeed

nextBytes

nextInt

nextInt

nextLong

nextBoolean

nextFloat

nextDouble

nextGaussian