Reference > Classes

Rand¶

Definition¶

1	`Rand var = .... ;`

Extends¶

Object

Extended By¶

None

Method Summary¶

Owner	Name	Return Type	Description
Rand	constructor(seed, secure)	Rand	Creates a new Randomizer, used for generating random numbers. If a seed is provided, then the numbers generated are the same across runs.
Object	getClassName()	String	Returns the string name of this object's class type.
Rand	nextBoolean()	Boolean	Returns a random Boolean value.
Rand	nextDouble(min, max)	Double	Returns a random Double between min and max values.
Rand	nextGaussian()	Double	Return a random signed Double with a mean of 0 and standard deviation of 1.
Rand	nextGuid()	String	Returns a random string.
Rand	nextInt(min, max)	Integer	Returns a random Integer between min and max values.
Rand	nextUUID()	UUID	Returns a randomly generated version 4 UUID object.
Rand	shuffle(list)	List	Returns a new list with the values' positions randomly shuffled.
Object	toJson()	String	Returns a string of a json representation of this object.

Method Definitions¶

constructor(seed,secure)¶

Rand rand = new Rand(Number seed, Boolean secure)

Description¶

Creates a new Randomizer, used for generating random numbers. If a seed is provided, then the numbers generated are the same across runs.

Parameter Definition¶

Name	Type	Description
seed	Number	seed for repeatability. If nullm then the seed is random
secure	Boolean	if true, then secure. if null or false, then not secure

Example 1¶

Rand r = new Rand();

// r = java.util.Random@f9b5552

Example 2¶

Rand r = new Rand(1,true);

// r = NativePRNG

getClassName()¶

String Object::getClassName()

Description¶

Returns the string name of this object's class type.

Example 14¶

Rand r = new Rand();
r.getClassName();

// r.getClassName() = Rand

nextBoolean()¶

Boolean Rand::nextBoolean()

Description¶

Returns a random Boolean value.

Example 1¶

Rand r = new Rand();
r.nextBoolean();

// r.nextBoolean() = true

nextDouble(min,max)¶

Double Rand::nextDouble(Number min, Number max)

Description¶

Returns a random Double between min and max values.

Parameter Definition¶

Name	Type	Description
min	Number	minimum number to be returned (inclusive). If null, then 0
max	Number	maximum number to be returned (exclusive). If null, then 1

Example 1¶

Rand r = new Rand();
r.nextDouble(0,10);

// r.nextDouble(0,10) = 2.9434065856887965

nextGaussian()¶

Double Rand::nextGaussian()

Description¶

Return a random signed Double with a mean of 0 and standard deviation of 1.

Example 1¶

Rand r = new Rand();
r.nextGaussian();

// r.nextGaussian() = -0.5731770639567692

nextGuid()¶

String Rand::nextGuid()

Description¶

Returns a random string.

Example 1¶

Rand r = new Rand();
r.nextGuid();

// r.nextGuid() = 9de62cbf-a0b0-a855-58ba-a61d82f1e8d6

nextInt(min,max)¶

Integer Rand::nextInt(Number min, Number max)

Description¶

Returns a random Integer between min and max values.

Parameter Definition¶

Name	Type	Description
min	Number	minimum number to be returned (inclusive). If null, then 0
max	Number	maximum number to be returned (exclusive). If null, then 1

Example 1¶

Rand r = new Rand();
r.nextInt(0,10);

// r.nextInt(0,10) = 6

nextUUID()¶

UUID Rand::nextUUID()

Description¶

Returns a randomly generated version 4 UUID object.

Example 1¶

Rand r = new Rand();
r.nextUUID();

// r.nextUUID() = de52873e-f422-4436-875e-25bd4f748019

shuffle(list)¶

List Rand::shuffle(List list)

Description¶

Returns a new list with the values' positions randomly shuffled.

Parameter Definition¶

Name	Type	Description
list	List	list of values to shuffle

Example 1¶

Rand r = new Rand();
List l = new List("a","b","c");
r.shuffle(l);

// r.shuffle(l) = [a, c, b]

toJson()¶

String Object::toJson()

Description¶

Returns a string of a json representation of this object.

Example 14¶

Rand r = new Rand();
r.toJson();

// r.toJson() = "java.util.Random@21f9277b"