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Java Random nextDouble() Method with Example

Random Class nextDouble() method: Here, we are going to learn about the nextDouble() method of Random Class with its syntax and example.
Submitted by Preeti Jain, on March 23, 2020

Random Class nextDouble() method

  • nextDouble() method is available in java.util package.
  • nextDouble() method is used to generate the next pseudo-random double value between the range 0.0 and 1.0 from this Random Value Generator.
  • nextDouble() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
  • nextDouble() method does not throw an exception at the time of returning double.

Syntax:

    public double nextDouble();

Parameter(s):

  • It does not accept any parameter.

Return value:

The return type of the method is double, it returns next pseudo-random distributed double value between the given range from this Random Generator.

Example:

// Java program to demonstrate the example // of double nextDouble() method of // Random import java.util.*; public class NextDoubleOfRandom { public static void main(String args[]) { // Instantiates Random object Random ran = new Random(); // By using nextDouble() method is // to return double pseudo-random // value between 0.0 and 1.0 by // using Random Value Generator double val = ran.nextDouble(); // Display System.out.println("ran.nextDouble(): " + val); } }

Output

RUN 1:
ran.nextDouble(): 0.663707914081102

RUN 2:
ran.nextDouble(): 0.37675184205154066

RUN 3:
ran.nextDouble(): 0.3770186607832615
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