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Random setSeed() method in Java with Examples
  • Last Updated : 07 Jan, 2019

The setSeed() method of Random class sets the seed of the random number generator using a single long seed.

Syntax:

public void setSeed() 

Parameters: The function accepts a single parameter seed which is the initial seed.

Return Value: This method has no return value.

Exception: The function does not throws any exception.



Program below demonstrates the above mentioned function:

Program 1:




// program to demonstrate the
// function java.util.Random.setSeed()
  
import java.util.*;
public class GFG {
    public static void main(String[] args)
    {
  
        // create random object
        Random r = new Random();
  
        // return the next pseudorandom integer value
        System.out.println("Random Integer value : "
                           + r.nextInt());
  
        // setting seed
        long s = 24;
  
        r.setSeed(s);
  
        // value after setting seed
        System.out.println("Random Integer value : " + r.nextInt());
    }
}
Output:
Random Integer value : -2053473769
Random Integer value : -1152406585

Program 2:




// program to demonstrate the
// function java.util.Random.setSeed()
  
import java.util.*;
public class GFG {
    public static void main(String[] args)
    {
  
        // create random object
        Random r = new Random();
  
        // return the next pseudorandom integer value
        System.out.println("Random Integer value : "
                           + r.nextInt());
  
        // setting seed
        long s = 29;
  
        r.setSeed(s);
  
        // value after setting seed
        System.out.println("Random Integer value : "
                           + r.nextInt());
    }
}
Output:
Random Integer value : -388369680
Random Integer value : -1154330330

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