Uses of Class java.util.Random (Java SE 26 & JDK 26)
Description: use: module: java.base, package: java.util, class: Random

# Uses of Class
java.util.Random

Packages that use Random
Package
Description
java.math
Provides classes for performing arbitrary-precision integer arithmetic (`BigInteger`) and arbitrary-precision decimal arithmetic (`BigDecimal`).
java.security
Provides the classes and interfaces for the security framework.
java.util
Contains the collections framework, some internationalization support classes, a service loader, properties, random number generation, string parsing and scanning classes, base64 encoding and decoding, a bit array, and several miscellaneous utility classes.
java.util.concurrent
Utility classes commonly useful in concurrent programming.

- ## Uses of Random in java.math

  Methods in java.math with parameters of type Random
  Modifier and Type
  Method
  Description
  `static BigInteger`
  BigInteger.`probablePrime(int bitLength, Random rnd)`
  Returns a positive BigInteger that is probably prime, with the specified bitLength.
  Constructors in java.math with parameters of type Random
  Modifier
  Constructor
  Description
  ``
  `BigInteger(int bitLength, int certainty, Random rnd)`
  Constructs a randomly generated positive BigInteger that is probably prime, with the specified bitLength.
  ``
  `BigInteger(int numBits, Random rnd)`
  Constructs a randomly generated BigInteger, uniformly distributed over the range 0 to (2`numBits` - 1), inclusive.

- ## Uses of Random in java.security

  Subclasses of Random in java.security
  Modifier and Type
  Class
  Description
  `class`
  `SecureRandom`
  This class provides a cryptographically strong random number generator (RNG).

- ## Uses of Random in java.util

  Methods in java.util that return Random
  Modifier and Type
  Method
  Description
  `static Random`
  Random.`from(RandomGenerator generator)`
  Returns an instance of `Random` that delegates method calls to the `RandomGenerator` argument.
  Methods in java.util with parameters of type Random
  Modifier and Type
  Method
  Description
  `static void`
  Collections.`shuffle(List<?> list, Random rnd)`
  Randomly permute the specified list using the specified source of randomness.

- ## Uses of Random in java.util.concurrent

  Subclasses of Random in java.util.concurrent
  Modifier and Type
  Class
  Description
  `final class`
  `ThreadLocalRandom`
  A random number generator (with period 264) isolated to the current thread.