public class SynchronizedRandomGenerator extends Object implements RandomGenerator
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.| Constructor and Description |
|---|
SynchronizedRandomGenerator(RandomGenerator rng)
Creates a synchronized wrapper for the given
RandomGenerator
instance. |
| 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. |
public SynchronizedRandomGenerator(RandomGenerator rng)
RandomGenerator
instance.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.public void setSeed(int seed)
int seed.
Sequences of values generated starting with the same seeds should be identical.
setSeed in interface RandomGeneratorseed - the seed valuepublic void setSeed(int[] seed)
int array seed.
Sequences of values generated starting with the same seeds should be identical.
setSeed in interface RandomGeneratorseed - the seed valuepublic void setSeed(long seed)
long seed.
Sequences of values generated starting with the same seeds should be identical.
setSeed in interface RandomGeneratorseed - the seed valuepublic void nextBytes(byte[] bytes)
nextBytes in interface RandomGeneratorbytes - the non-null byte array in which to put the
random bytespublic int nextInt()
int
value from this random number generator's sequence.
All 232 possible int values
should be produced with (approximately) equal probability.nextInt in interface RandomGeneratorint
value from this random number generator's sequencepublic int nextInt(int n)
int value
between 0 (inclusive) and the specified value (exclusive), drawn from
this random number generator's sequence.nextInt in interface RandomGeneratorn - the bound on the random number to be returned. Must be
positive.int
value between 0 (inclusive) and n (exclusive).public long nextLong()
long
value from this random number generator's sequence. All
264 possible long values
should be produced with (approximately) equal probability.nextLong in interface RandomGeneratorlong
value from this random number generator's sequencepublic boolean nextBoolean()
boolean value from this random number generator's
sequence.nextBoolean in interface RandomGeneratorboolean value from this random number generator's
sequencepublic float nextFloat()
float
value between 0.0 and 1.0 from this random
number generator's sequence.nextFloat in interface RandomGeneratorfloat
value between 0.0 and 1.0 from this
random number generator's sequencepublic double nextDouble()
double value between 0.0 and
1.0 from this random number generator's sequence.nextDouble in interface RandomGeneratordouble value between 0.0 and
1.0 from this random number generator's sequencepublic double nextGaussian()
double value with mean 0.0 and standard
deviation 1.0 from this random number generator's sequence.nextGaussian in interface RandomGeneratordouble value with mean 0.0 and
standard deviation 1.0 from this random number
generator's sequenceCopyright © 2003–2016 The Apache Software Foundation. All rights reserved.