public class C {
  public int i = 0;

  void incI(int x) {
    System.out.println("incI" + i);
    i = i + x;
  }

  void incI() {
    System.out.println("incI" + i);
    i = i + 1;
  }

  static public void main(String[] arg) {
    C c = new C();
    c.incI(50);
    c.incI(500);
    c.incI(1500);
  }
}