while loop example in java

public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {

      int x = 20;

      while( x < 30 ) {
         System.out.print("value of x : " + x );
         x++;
         System.out.print("\n");
      }
   }
}

Output:

value of x : 20

value of x : 21

value of x : 22

value of x : 23

value of x : 24

value of x : 25

value of x : 26

value of x : 27

value of x : 28

value of x : 29