SuperOP.java

public class SuperClass {
	public void display() {
		System.out.println("Super");
	}
}

SuperOP1.java

public class SubClasss extends SuperClass {
	public void display() {
		System.out.println("Sub");
	}
	private void access() {
		display(); 	  // invokes one in SubClass
		super.display();  // invokes one in SuperClass
	}
}