package com.person;

public class Person {

public void say(){

System.out.println("人类具有说话的能力；");

}

}

package com.person;

public class Chinese extends Person {

public void say(){

System.out.println("中国人说中文；");

}

}

package com.person;

public class American extends Person {

public void say(){

System.out.println("美国人说英文；");

}

}

package com.person;

public abstract class APerson {

    public abstract void say();

}

package com.person;

public class Test {

public static void main(String[] args) {

// TODO 自动生成的方法存根

Person p=new Chinese();

Person p2=new American();

p.say();

p2.say();

}

}