java 类与对象 3---super关键字

 1.调用父类中被覆盖的方法；

父类Person:

 

public class Person{
    publci String name;
    publci int age;
    public void getInfo(){
        System.out.println("姓名为："+name);
        System.out.println("年龄为："+age);
    }
}

子类Worker:

 

public class Worker extends Person{
    String company;
    public void getInfo(){        //重写父类的getInfo()方法
        super.getInfo();
        System.out.println("公司为："+company);
    }
    public static void main(String[] args){

        Worker worker = new Worker();
        worker.name = "小屋";
        worker.age = 18;
        worker.company = "天马集团";
        worker。getInfo();
    }
}

2.使用super关键字调用父类的构造方法；

不继承父类的构造方法

 

public class Animal{
    String skin;
    public Animal(String str){
        skin = str;
    }
}
public class Bird extends Animal{
    public Bird(){
        super("毛毛");
    }
}