Java：接口编程题：写出如下UML表示的接口和类的代码（有A、B、C三个接口，和play、show 方法）

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根据上图编写代码：

package com.jredu.oop.ch03;public interface A {void show();A play(int m);//返回值是A}

package com.jredu.oop.ch03;public class AA implements A {@Overridepublic void show() {// TODO Auto-generated method stub}@Overridepublic A play(int m) {// TODO Auto-generated method stubreturn null;}}

package com.jredu.oop.ch03;public interface B extends A{B play();//返回值是B}

package com.jredu.oop.ch03;public class BB implements B {@Overridepublic B play() {// TODO Auto-generated method stubreturn null;}@Overridepublic void show() {// TODO Auto-generated method stub}@Overridepublic A play(int m) {// TODO Auto-generated method stubreturn null;}}

package com.jredu.oop.ch03;public interface C {B play(int m,int n); //返回值是B}

package com.jredu.oop.ch03;public class CC implements B, C {@Overridepublic B play(int m, int n) {// TODO Auto-generated method stubreturn null;}@Overridepublic B play() {// TODO Auto-generated method stubreturn null;}@Overridepublic void show() {// TODO Auto-generated method stub}@Overridepublic A play(int m) {// TODO Auto-generated method stubreturn null;}}

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