In order to use the Apache commons-rng third party api we need to have the below dependencies added in the project. SplittableRandom splittableRandom = new SplittableRandom()
HOW TO USE RNG REPORTER FOR 3RD GEN GENERATOR
Just create a instance for the SplittableRandom class by calling the no argument constructor and call the generator method. The split() constructs and returns a new SplittableRandom instance that shares no mutable state with the current instance. SplittableRandom can be used with Stream API or Parallel stream which enables us to produce quality pseudorandom numbers. SplittableRandom is introduced in Java 8, it is a high-performance random number generator but not thread-safe. ("Gaussian SecureRandom value: " + secureRandom.nextGaussian()) ("Boolean SecureRandom value: " + secureRandom.nextBoolean()) ("Double SecureRandom value: " + secureRandom.nextDouble()) ("Float SecureRandom value: " + secureRandom.nextFloat()) ("Long SecureRandom value: " + secureRandom.nextLong()) ("Int SecureRandom value: " + secureRandom.nextInt()) SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG") Public static void main(String args) throws NoSuchAlgorithmException Once we have obtained the instance, all we need to do is just call the random number generator methods such as nextInt(), nextFloat(), nextDouble(), etc. SecureRandom secureRandom = SecureRandom.getInstance(“SHA1PRNG”) Ĭalling the getInstance() factory method is the preferred way for obtaining the instance of the SecureRandom class, where we will have the ability to specify the pseudorandom number-generation algorithm and optionally the desired provider of the algorithm. SecureRandom random = new SecureRandom() SecureRandom instance can be obtained in two different waysġ. The SecureRandom is mostly used in the Security algorithm for generating the secret keys. Random class instances are not cryptographically secure, SecureRandom is Cryptographically Secure Pseudo-Random Number Generators (CSPRNG) which can generate a cryptographically secure random number. ("Gaussian ThreadLocalRandom value: "+threadRandom.nextGaussian()) ("Boolean ThreadLocalRandom value: "+threadRandom.nextBoolean()) ("Double ThreadLocalRandom value: "+threadRandom.nextDouble()) ("Float ThreadLocalRandom value: "+threadRandom.nextFloat()) ("Long ThreadLocalRandom value: "+threadRandom.nextLong()) ("Int ThreadLocalRandom value: "+threadRandom.nextInt()) ThreadLocalRandom threadRandom = ThreadLocalRandom.current() The current() method returns the instance of the ThreadLocalRandom class and call one of the randon number generator methods nextInt(), nextLong(), nextDouble(), nextFloat(), nextBoolean() or nextGaussian(). ThreadLocalRandom class doesn’t support explicit seeding, unlike Random class, to ensure true randomness. The ThreadLocalRandom random number generator is isolated to the current instance, a new instance will be created for each thread with an internally generated seed. Though Random class instance is also thread-safe concurrent usage will result in contention and poor performance. ThreadLocalRandom was introduced in Java 7, ThreadLocalRandom gives better performance and less overhead in a multi-threaded environment. ("Gaussian random value: "+random.nextGaussian())
("Boolean random value: "+random.nextBoolean()) ("Double random value: "+random.nextDouble()) ("Float random value: "+random.nextFloat())
("Long random value: "+random.nextLong())