Random class java.util
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2019-09-13 05:36:45
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11. java.util classes Random
- Examples of such a flow for generating a pseudo-random number.
- If Random creates two instances of the same seed the same sequence of method calls for each instance, which will generate and return the same sequence of numbers.
Construction method
- public Random (): Creates a new random number generator.
- public Random (long seed): creates a new random number generator using a single long seed.
Common method nextLong()
- public int nextInt (): Returns the next pseudo-random number sequence int value of the random number generator uniformly distributed.
- public int nextInt (int n): Returns a pseudo-random number, which is derived from the random number generator sequence, between 0 (inclusive) and the specified value (not included) uniformly distributed int value.
- public double nextGaussian (): Returns the next pseudo-random number that is the random number generator from the sequence of a Gaussian ( "normal") Double value distribution, mean 0.0, standard deviation 1.0.
nextBytes(byte[] bytes) ，nextDouble() ，nextFloat() ，nextLong()
Origin www.cnblogs.com/Stephanie-boke/p/11515224.html