Random Numbers

Source: (RandomNumbers.java)

import java.util.Random;
 
public class RandomNumbers {
 
   public static void main(String[] args) {
 
      Random r = new Random();
      int x;
 
      // generate random number
      x = r.nextInt();
      System.out.println(x);
 
      // generate random positive number
      x = r.nextInt(Integer.MAX_VALUE);
      System.out.println(x);
 
      // generate random number under 1000
      x = r.nextInt(1000);
      System.out.println(x);
 
      // generate random number between 10 and 19
      int low=10;
      int high=20;
      x = r.nextInt(high-low)+low;
      System.out.println(x);
   }
}
 

Output:

$ java RandomNumbers
845954847
2097900753
891
11