class A { 
  int i, j; 
  A(int a, int b) { 
    i = a; 
    j = b; 
  } 
  void show() {  // zobrazi i a j 
    System.out.println("i a j: " + i + " " + j); 
  } 
} 
 
class B extends A {
  int k; 
  B(int a, int b, int c) { 
    super(a, b); 
    k = c; 
  } 
  void show() { // predefinovani show() z A 
    System.out.println("k: " + k); 
    super.show();
  } 
  void show(String s) { // pretizeni show() z A 
    System.out.println("s: " + s); 
  }
} 
 
class Override { 
  public static void main(String args[]) { 
    B subOb = new B(1, 2, 3); 
    subOb.show(); // volani show() v B 
    subOb.show("nic"); // volani show(String s) v B 
  } 
}