super is used to reference methods and field from superclass : super « Modifiers « SCJP

1. SCJP
2. Modifiers
3. super

public class MainClass {
  public static void main(String[] argv) {
    new MySubclass();
  }
}

class MyClass {
  int i = 9;

  public MyClass() {
  }

}

class MySubclass extends MyClass {
  public MySubclass() {
    super();
    System.out.println(super.i);
  }

}

9