Package weka.core

Class Debug.Random

java.lang.Object
java.util.Random
weka.core.Debug.Random
All Implemented Interfaces:
Serializable, RandomGenerator, RevisionHandler
Enclosing class:
Debug
public static class Debug.Random extends Random implements Serializable, RevisionHandler
This extended Random class enables one to print the generated random numbers etc., before they are returned. It can either use stdout (default) for outputting the logging information or a Log object (level is then INFO).
Version:
$Revision: 8034 $
Author:
FracPete (fracpete at waikato dot ac dot nz)
See Also:

  • Constructor Details

    • Random

      public Random()
      Creates a new random number generator. With no debugging.

    • Random

      public Random(long seed)
      Creates a new random number generator using a single long seed. With no debugging
      Parameters:
      seed - the seed value

    • Random

      public Random(boolean debug)
      Creates a new random number generator. With optional debugging.
      Parameters:
      debug - if true, debugging output is enabled

    • Random

      public Random(long seed, boolean debug)
      Creates a new random number generator using a single long seed. With optional debugging
      Parameters:
      seed - the seed value
      debug - if true, debugging output is enabled

  • Method Details

    • setDebug

      public void setDebug(boolean value)
      sets whether to print the generated random values or not
      Parameters:
      value - if true debugging output is enabled

    • getDebug

      public boolean getDebug()
      returns whether to print the generated random values or not
      Returns:
      true if debugging output is enabled

    • setLog

      public void setLog(Debug.Log value)
      the log to use, if it is null then stdout is used
      Parameters:
      value - the log to use

    • getLog

      public Debug.Log getLog()
      the currently used log, if null then stdout is used for outputting the debugging information
      Returns:
      the log, can be null

    • getID

      public long getID()
      returns the unique ID of this number generator
      Returns:
      the unique ID of this number generator

    • printStackTrace

      public void printStackTrace()
      prints the current stacktrace

    • 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
      Overrides:
      nextBoolean in class Random
      Returns:
      random boolean

    • nextBytes

      public void nextBytes(byte[] bytes)
      Generates random bytes and places them into a user-supplied byte array.
      Specified by:
      nextBytes in interface RandomGenerator
      Overrides:
      nextBytes in class Random
      Parameters:
      bytes - array to fill with random bytes

    • 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
      Overrides:
      nextDouble in class Random
      Returns:
      random double

    • 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
      Overrides:
      nextFloat in class Random
      Returns:
      random float

    • 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
      Overrides:
      nextGaussian in class Random
      Returns:
      random double, gaussian distributed

    • nextInt

      public int nextInt()
      Returns the next pseudorandom, uniformly distributed int value from this random number generator's sequence.
      Specified by:
      nextInt in interface RandomGenerator
      Overrides:
      nextInt in class Random
      Returns:
      random int

    • 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
      Overrides:
      nextInt in class Random
      Parameters:
      n - the upper limit (exclusive)
      Returns:
      random int

    • nextLong

      public long nextLong()
      Returns the next pseudorandom, uniformly distributed long value from this random number generator's sequence.
      Specified by:
      nextLong in interface RandomGenerator
      Overrides:
      nextLong in class Random
      Returns:
      random long

    • setSeed

      public void setSeed(long seed)
      Sets the seed of this random number generator using a single long seed.
      Overrides:
      setSeed in class Random
      Parameters:
      seed - the seed value

    • toString

      public String toString()
      returns a string representation of this number generator
      Overrides:
      toString in class Object
      Returns:
      a string representation

    • getRevision

      public String getRevision()
      Returns the revision string.
      Specified by:
      getRevision in interface RevisionHandler
      Returns:
      the revision