java，作业张三李四，运用类的继承

    private int age;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    } 
    public void work()
    {
        System.out.println("我是你爹");
    }

}

public class TestZhangsan {

    public static void main(String[] args) {
        Zhangsan z=new Zhangsan();
        z.setName("张三");
        z.setSex("男");
        z.setAge(20);
        System.out.println("名字:"+z.getName()+"性别:"+z.getSex()+"年龄:"+z.getAge());
        z.work();
        System.out.println();
        
        Lisi l=new Lisi();
        l.setName("李四");
        l.setSex("女");
        l.setAge(21);
        System.out.println("名字:"+l.getName()+"性别:"+l.getSex()+"年龄:"+l.getAge());
        l.work();

    }

public class Lisi extends Zhangsan {
    public  Lisi(){
        System.out.println("你是我爹");
    }

}