Another Way to Seed the Random Number Generator

You can also seed the random number generator by using the setSeed method as shown below. This way makes it easy to create a given set of random numbers more than once in the same program run:

Java > cat prog48.java

import java.util.Random;

public class prog48

{

public static void main (String args[])

 {

 Random random_number = new Random();

 System.out.println("Seeding random_number");

 random_number.setSeed(123);

 System.out.println("Random number 1 = "

 + random_number.nextInt());

 System.out.println("Random number 2 = "

 + random_number.nextInt());

 System.out.println("Random number 3 = "

 + random_number.nextInt());

 System.out.println("Reseeding random_number");

 random_number.setSeed(123);

 System.out.println("Random number 4 = "

 + random_number.nextInt());

 System.out.println("Random number 5 = "

 + random_number.nextInt());

 System.out.println("Random number 6 = "

 + random_number.nextInt());

 }

}

Java > javac prog48.java

Java > java prog48

Seeding random_number

Random number 1 = -1188957731

Random number 2 = 1018954901

Random number 3 = -39088943

Reseeding random_number

Random number 4 = -1188957731

Random number 5 = 1018954901

Random number 6 = -39088943

Java >