第1节继承二

package com.itheima_04;

public class Fu {
    public Fu(){
        System.out.println("Fu类无参构造方法");
    }

    public Fu(int age){
        System.out.println("Fu类带参构造方法");
    }
}

package com.itheima_04;

public class Zi extends Fu{
    public Zi(){
        System.out.println("Zi类无参构造方法");
    }

    public Zi(int age){
        System.out.println("Zi类带参构造方法");
    }
}

package com.itheima_04;
/*
* 测试类
* */
public class Demo {
    public static void main(String[] args) {
        //创建对象
        Zi z=new Zi();
        Zi z2=new Zi(12);
    }
}

//运行结果：
Fu类无参构造方法
Zi类无参构造方法
Fu类无参构造方法
Zi类带参构造方法

package com.itheima_04;

public class Zi extends Fu{
    public Zi(){
      //  super();
        super(12);
        System.out.println("Zi类无参构造方法");
    }

    public Zi(int age){
     //   super();
        super(12);
        System.out.println("Zi类带参构造方法");
    }
}

package com.itheima_05;

public class Fu {
    public void show(){
        System.out.println("Fu中show方法被调用");
    }
}

package com.itheima_05;

public class Zi extends Fu{
    public void method(){
        System.out.println("Zi中method方法被调用");
    }
    public void show(){
        super.show();
        System.out.println("Zi中show方法被调用");
    }
}

package com.itheima_05;
/*
* 测试类
* */
public class Demo {
    public static void main(String[] args) {
        Zi z=new Zi();
        z.method();
        z.show();
    }
}

package com.itheima_06;
/*
* 手机类
* */
public class Phone {
    public void call(String name){
        System.out.println("给"+name+"打电话");
    }
}

package com.itheima_06;

public class NewPhone extends Phone{
    /*
    public void call(String name){
        System.out.println("打开手机视频");
        System.out.println("给"+name+"打电话");
    }
    */


    @Override //注解
    public void call(String name){
        System.out.println("打开手机视频");
        super.call(name);
    }
}

package com.itheima_06;

public class PhoneDemo {
    public static void main(String[] args) {
        Phone p=new Phone();
        p.call("曹巧梦");

        System.out.println("-------------");

        NewPhone newPhone=new NewPhone();
        newPhone.call("曹巧梦");
    }
}