Class ThreadLocalRandom

java.lang.Object
java.util.Random
org.multiverse.utils.ThreadLocalRandom
All Implemented Interfaces:
Serializable, java.util.random.RandomGenerator
public class ThreadLocalRandom extends Random
See Also:

  • Nested Class Summary

    Nested classes/interfaces inherited from interface java.util.random.RandomGenerator

    java.util.random.RandomGenerator.ArbitrarilyJumpableGenerator, java.util.random.RandomGenerator.JumpableGenerator, java.util.random.RandomGenerator.LeapableGenerator, java.util.random.RandomGenerator.SplittableGenerator, java.util.random.RandomGenerator.StreamableGenerator

  • Constructor Summary

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

  • Method Summary

    Modifier and Type
    Method
    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 Random

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

    Methods inherited from class Object

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

    Methods inherited from interface java.util.random.RandomGenerator

    equiDoubles, isDeprecated, nextExponential, nextFloat, nextFloat, nextGaussian

  • Constructor Details

    • 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 Details

    • 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