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.
Rand	constructor()	Rand	Creates a new Randomizer, used for generating random numbers
Rand	constructor(seed)	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 null 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@78a773fd

Example 2¶

Rand r = new Rand(1,true);

// r = java.security.SecureRandom@57c03d88

constructor()¶

Rand rand = new Rand()

Description¶

Creates a new Randomizer, used for generating random numbers

constructor(seed)¶

Rand rand = new Rand(Number seed)

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 null then the seed is random

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) = 4.904304311063381

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() = -1.4529385629929248

nextGuid()¶

String Rand::nextGuid()

Description¶

Returns a random string.

Example 1¶

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

// r.nextGuid() = 56ef1a63-c046-4b98-614c-08b90772275b

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) = 1

nextUUID()¶

UUID Rand::nextUUID()

Description¶

Returns a randomly generated version 4 UUID object.

Example 1¶

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

// r.nextUUID() = 0ca3e601-8fe7-49ed-9bf7-8745f3b38468

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) = [c, a, 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@16aa8654"