public class Fu {
    public void show() {
        System.out.println("show方法被調(diào)用");
    }
}
public class Zi extends Fu {
    public void method() {
        System.out.println("method方法被調(diào)用");
    }
}
public class Demo {
    public static void main(String[] args) {
        //創(chuàng)建對(duì)象，調(diào)用方法
        Fu f = new Fu();
        f.show();

        Zi z = new Zi();
        z.method();
        z.show();
    }
}

public class Granddad {

    public void drink() {
        System.out.println("爺爺愛喝酒");
    }

}

public class Father extends Granddad {

    public void smoke() {
        System.out.println("爸爸愛抽煙");
    }

}

public class Mother {

    public void dance() {
        System.out.println("媽媽愛跳舞");
    }

}
public class Son extends Father {
	// 此時(shí)，Son類中就同時(shí)擁有drink方法以及smoke方法
}

class Fu {
    int num = 10;
}
class Zi {
    int num = 20;
    public void show(){
        int num = 30;
        System.out.println(num);
    }
}
public class Demo1 {
    public static void main(String[] args) {
        Zi z = new Zi();
        z.show();	// 輸出show方法中的局部變量30
    }
}

public class Fu {
    private void show() {
        System.out.println("Fu中show()方法被調(diào)用");
    }

    void method() {
        System.out.println("Fu中method()方法被調(diào)用");
    }
}

public class Zi extends Fu {

    /* 編譯【出錯(cuò)】，子類不能重寫父類私有的方法*/
    @Override
    private void show() {
        System.out.println("Zi中show()方法被調(diào)用");
    }
   
    /* 編譯【出錯(cuò)】，子類重寫父類方法的時(shí)候，訪問權(quán)限需要大于等于父類 */
    @Override
    private void method() {
        System.out.println("Zi中method()方法被調(diào)用");
    }

    /* 編譯【通過】，子類重寫父類方法的時(shí)候，訪問權(quán)限需要大于等于父類 */
    @Override
    public void method() {
        System.out.println("Zi中method()方法被調(diào)用");
    }
}