super 关键字

class Grandparent {    public void Print() {        System.out.println("Grandparent's Print()");    }}class Parent extends Grandparent {    public void Print() {        System.out.println("Parent's Print()");    }}class Child extends Parent {    public void Print() {        super.super.Print();        System.out.println("Child's Print()");    }}public class Main {    public static void main(String[] args) {        Child c = new Child();        c.Print();    }}

Output: Compiler Error

class Grandparent {    public void Print() {        System.out.println("Grandparent's Print()");    }}class Parent extends Grandparent {    public void Print() {        super.Print();        System.out.println("Parent's Print()");    }}class Child extends Parent {    public void Print() {        super.Print();        System.out.println("Child's Print()");    }}public class Main {    public static void main(String[] args) {        Child c = new Child();        c.Print();    }}

Output:

Grandparent's Print()

Parent's Print()

Child's Print()