Methods with differing type signatures are overloaded - not overridden. : Method Overloading « Class Definition « Java Tutorial

1. Java Tutorial
2. Class Definition
3. Method Overloading

class A {
  int i, j;

  A(int a, int b) {
    i = a;
    j = b;
  }

  void show() {
    System.out.println("i and j: " + i + " " + j);
  }
}

class B extends A {
  int k;

  B(int a, int b, int c) {
    super(a, b);
    k = c;
  }

  void show(String msg) {
    System.out.println(msg + k);
  }
}

class Override {
  public static void main(String args[]) {
    B subOb = new B(1, 2, 3);

    subOb.show("This is k: "); // this calls show() in B
    subOb.show(); // this calls show() in A
  }
}