| 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, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array).
|
| java.util.concurrent |
Utility classes commonly useful in concurrent programming.
|
| Modifier and Type | Method and Description |
|---|---|
static BigInteger |
BigInteger.probablePrime(int bitLength, Random
Returns a positive BigInteger that is probably prime, with the specified bitLength.
|
| Constructor and Description | |
|---|---|
BigInteger(int bitLength, int certainty, Random
Constructs a randomly generated positive BigInteger that is probably prime, with the specified bitLength.
|
|
BigInteger(int numBits, Random
Constructs a randomly generated BigInteger, uniformly distributed over the range 0 to (2
numBits - 1), inclusive.
|
| Modifier and Type | Class and Description |
|---|---|
class |
SecureRandom
This class provides a cryptographically strong random number generator (RNG).
|
| Modifier and Type | Method and Description |
|---|---|
static void |
Collections.shuffle(List
Randomly permute the specified list using the specified source of randomness.
|
| Modifier and Type | Class and Description |
|---|---|
class |
ThreadLocalRandom
A random number generator isolated to the current thread.
|