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java.lang.Objectjava.util.Random
org.apache.commons.math.random.RandomAdaptor
public class RandomAdaptor
Extension of java.util.Random
wrapping a
RandomGenerator
.
Field Summary | |
---|---|
private RandomGenerator |
randomGenerator
Wrapped randomGenerator instance |
private static long |
serialVersionUID
Serializable version identifier. |
Constructor Summary | |
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private |
RandomAdaptor()
Prevent instantiation without a generator argument |
|
RandomAdaptor(RandomGenerator randomGenerator)
Construct a RandomAdaptor wrapping the supplied RandomGenerator. |
Method Summary | |
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static java.util.Random |
createAdaptor(RandomGenerator randomGenerator)
Factory method to create a Random using the supplied
RandomGenerator . |
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.util.Random |
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next |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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private static final long serialVersionUID
private final RandomGenerator randomGenerator
Constructor Detail |
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private RandomAdaptor()
public RandomAdaptor(RandomGenerator randomGenerator)
randomGenerator
- the wrapped generatorMethod Detail |
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public static java.util.Random createAdaptor(RandomGenerator randomGenerator)
Random
using the supplied
RandomGenerator
.
randomGenerator
- wrapped RandomGenerator instance
public boolean nextBoolean()
boolean
value from this random number generator's
sequence.
nextBoolean
in interface RandomGenerator
nextBoolean
in class java.util.Random
boolean
value from this random number generator's
sequencepublic void nextBytes(byte[] bytes)
nextBytes
in interface RandomGenerator
nextBytes
in class java.util.Random
bytes
- the non-null byte array in which to put the
random bytespublic double nextDouble()
double
value between 0.0
and
1.0
from this random number generator's sequence.
nextDouble
in interface RandomGenerator
nextDouble
in class java.util.Random
double
value between 0.0
and
1.0
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 RandomGenerator
nextFloat
in class java.util.Random
float
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 RandomGenerator
nextGaussian
in class java.util.Random
double
value with mean 0.0
and
standard deviation 1.0
from this random number
generator's sequencepublic 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 RandomGenerator
nextInt
in class java.util.Random
int
value from this random number generator's sequencepublic int nextInt(int n)
nextInt
in interface RandomGenerator
nextInt
in class java.util.Random
n
- the bound on the random number to be returned. Must be
positive.
java.lang.IllegalArgumentException
- if n is not positive.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 RandomGenerator
nextLong
in class java.util.Random
long
value from this random number generator's sequencepublic void setSeed(int seed)
int
seed.
Sequences of values generated starting with the same seeds should be identical.
setSeed
in interface RandomGenerator
seed
- 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 RandomGenerator
seed
- the seed valuepublic void setSeed(long seed)
long
seed.
Sequences of values generated starting with the same seeds should be identical.
setSeed
in interface RandomGenerator
setSeed
in class java.util.Random
seed
- the seed value
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