How to Create a Random Double Value in Java?

Java – Create Random Double Value

To create a random double precision number in Java, use Random.nextDouble() method. Create java.util.Random class object and call nextDouble() method on this object. nextDouble() returns a randomly generated double precision number between -1.0 and 1.0.

In the following example, we will create a random double value using nextDouble() method.

Java Program

import java.util.Random;

public class Example{ 
    public static void main(String[] args) {
    	Random random = new Random();
    	double d = random.nextDouble();
    	System.out.println("Next random double value is : " + d);
    }
}

Output

Next random double value is : 0.2885113742924815

Reference to Random.nextDouble() method for syntax and more example programs.

Conclusion

In this Java Tutorial, we learned how to create a random double value using java.util.Random.nextDouble() method.