Java Random - doubles() Method

The java.util.Random.doubles() method returns a stream producing the given streamSize number of pseudorandom double values, each between zero (inclusive) and one (exclusive). A pseudorandom double value is generated as if it's the result of calling the method nextDouble().

Syntax

public DoubleStream doubles(long streamSize)

Parameters

Return Value

Returns a stream of pseudorandom double values.

Exception

Throws IllegalArgumentException, if streamSize is less than zero.

Example:

In the example below, the java.util.Random.doubles() method is used to get a stream of pseudorandom double values.

import java.util.*;
import java.util.stream.DoubleStream;

public class MyClass {
  public static void main(String[] args) {
    //creating a random object
    Random rand = new Random();

    //generating a stream containing 10
    //double random numbers
    DoubleStream stream = rand.doubles(10);

    //printing all random numbers from the stream
    stream.forEach(System.out::println); 
  }
}

One of the possible outcome is given below:

0.7021619676935855
0.5121949140779627
0.17278283521698257
0.6672681245462831
0.20313427738583256
0.9308440949098397
0.17301785765444577
0.838270346756193
0.1849557542993877
0.3970463711715079