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## weka.core
Class Debug.Random

    java.lang.Object
      java.util.Random
          weka.core.Debug.Random

All Implemented Interfaces:
  java.io.Serializable, RevisionHandler

Enclosing class:
  Debug

    public static class Debug.Random

extends java.util.Random
implements java.io.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: 7519 $
Author:
  FracPete (fracpete at waikato dot ac dot nz)
See Also:
  Serialized Form

Constructor Summary
`Debug.Random()` Creates a new random number generator.
`Debug.Random(boolean debug)` Creates a new random number generator.
`Debug.Random(long seed)` Creates a new random number generator using a single long seed.
`Debug.Random(long seed, boolean debug)` Creates a new random number generator using a single long seed.

Method Summary
`boolean` | `getDebug()` returns whether to print the generated random values or not
`long` | `getID()` returns the unique ID of this number generator
`Debug.Log` | `getLog()` the currently used log, if null then stdout is used for outputting the debugging information
`java.lang.String` | `getRevision()` Returns the revision string.
`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` | `printStackTrace()` prints the current stacktrace
`void` | `setDebug(boolean value)` sets whether to print the generated random values or not
`void` | `setLog(Debug.Log value)` the log to use, if it is null then stdout is used
`void` | `setSeed(long seed)` Sets the seed of this random number generator using a single long seed.
`java.lang.String` | `toString()` returns a string representation of this number generator

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### Debug.Random

    public Debug.Random()

  Creates a new random number generator. With no debugging.

### Debug.Random

    public Debug.Random(long seed)

  Creates a new random number generator using a single long seed. With no debugging

  Parameters:
    `seed` - the seed value

### Debug.Random

    public Debug.Random(boolean debug)

  Creates a new random number generator. With optional debugging.

  Parameters:
    `debug` - if true, debugging output is enabled

### Debug.Random

    public Debug.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 Detail

### 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.

  Overrides:
    `nextBoolean` in class `java.util.Random`
  Returns:
    random boolean

### nextBytes

    public void nextBytes(byte[] bytes)

  Generates random bytes and places them into a user-supplied byte array.

  Overrides:
    `nextBytes` in class `java.util.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.

  Overrides:
    `nextDouble` in class `java.util.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.

  Overrides:
    `nextFloat` in class `java.util.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.

  Overrides:
    `nextGaussian` in class `java.util.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.

  Overrides:
    `nextInt` in class `java.util.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.

  Overrides:
    `nextInt` in class `java.util.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.

  Overrides:
    `nextLong` in class `java.util.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 `java.util.Random`
  Parameters:
    `seed` - the seed value

### toString

    public java.lang.String toString()

  returns a string representation of this number generator

  Overrides:
    `toString` in class `java.lang.Object`
  Returns:
    a string representation

### getRevision

    public java.lang.String getRevision()

  Returns the revision string.

  Specified by:
    `getRevision` in interface `RevisionHandler`
  Returns:
    the revision

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