com.pega.pegarules.pub.util

Interface Random

public interface Random

PRRandom provides a system wide time-seeded randome number generator.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	COPYRIGHT
static java.lang.String	VERSION

Method Summary

Modifier and Type	Method and Description
java.lang.String	getRandomHex(int length) returns a String of 2 x length length containing a random selection of uppercase hex characters.
java.lang.String	getRandomStringFromCharSet(char[] charset, int length) returns a String of length length containing a random selection of characters from charset
boolean	nextBoolean() returns the next random boolean in the sequence
void	nextBytes(byte[] bytes) fills the supplied array of bytes with random bytes
double	nextDouble() returns the next random double in the sequence
float	nextFloat() returns the next random float in the sequence
double	nextGaussian() returns the next Gaussian random (normal distribution) double in the sequence
int	nextInt() returns the next random integer in the sequence
int	nextInt(int n) returns the next random integer (between 0 and n-1 inclusive) in the sequence
long	nextLong() returns the next random long in the sequence

Field Detail

VERSION

static final java.lang.String VERSION

COPYRIGHT

static final java.lang.String COPYRIGHT

See Also:

Constant Field Values

Method Detail

nextBoolean

boolean nextBoolean()

returns the next random boolean in the sequence

Returns:

value

See Also:

Random.nextBoolean()

nextBytes

void nextBytes(byte[] bytes)

fills the supplied array of bytes with random bytes

Parameters:

bytes -

See Also:

Random.nextBytes(byte[])

nextDouble

double nextDouble()

returns the next random double in the sequence

Returns:

value

See Also:

Random.nextDouble()

nextGaussian

double nextGaussian()

returns the next Gaussian random (normal distribution) double in the sequence

Returns:

value

See Also:

Random.nextGaussian()

nextFloat

float nextFloat()

returns the next random float in the sequence

Returns:

value

See Also:

Random.nextFloat()

nextInt

int nextInt()

returns the next random integer in the sequence

Returns:

value

See Also:

Random.nextInt()

nextInt

int nextInt(int n)

returns the next random integer (between 0 and n-1 inclusive) in the sequence

Parameters:

n - exclusive upper limit for the random numbers returned.

Returns:

value

See Also:

Random.nextInt(int n)

nextLong

long nextLong()

returns the next random long in the sequence

Returns:

value

See Also:

Random.nextLong()

getRandomStringFromCharSet

java.lang.String getRandomStringFromCharSet(char[] charset,
                                            int length)

returns a String of length length containing a random selection of characters from charset

Parameters:

charset - An array of characters (does not require ordering, may contain duplicates)

length - The length of the returned random String

Returns:

A random String

getRandomHex

java.lang.String getRandomHex(int length)

returns a String of 2 x length length containing a random selection of uppercase hex characters. e.g. if length=4, returned string is 8 characters long

Parameters:

length - The length of the returned random hex String (x2 since hex is 2 chars per byte).

Returns:

A random hex String