class father {
  int n_time;
  private int to_show (int run_time) {
    run_time = n_time + 1; 
    return run_time;
  }
}
class child extends father {
  child() {
    n_time = 5;
    System.out.println(to_show(n_time)); // 7
  }
  public static void main(String[] a) {
    new child();
  }
  private int to_show (int run_time) {
    run_time = n_time + 2; 
    return run_time;
  }
}