Contoh Program Java penggunaan While Bersarang

class DemoWhileBersarang {
  public static void main(String[] args) {
 

    int i=1, j;
    while (i<=5) {
    j=1;
    while (j<=i) {
     System.out.print(i*j + " ");
     j++;
    }    
    System.out.println();
    i++;
    }
  }
}