继承与方法重写

最新推荐文章于 2021-01-15 23:48:03 发布

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本文通过一个具体的Java代码示例，展示了继承与方法重写的概念。代码中定义了一个学生类（Student）和一个本科生类（Undergraduate），本科生类继承自学生类，并重写了show方法，展示了如何在子类中覆盖父类的方法。

继承与方法重写

/**
*author:pangwu
*/
package com.pangwu;

public class classmate {
    public static void main(String[] args){
        Student student1 = new Student("李健",19);
        student1.show();
        Undergraduate undergraduate1 =new Undergraduate("风清扬",22,"学士");
        undergraduate1.show();
    }
}

class Student{
    public  String name;
    public  int age;
    Student( String name,int age){
        this.name=name;
        this.age=age;
    }
    Student() {

    }
    public void show(){
        System.out.print("name:"+name+"\t");
        System.out.println("age:"+age);
    }
}

class Undergraduate extends Student{
    public String degree;
    Undergraduate(String name,int age,String degree){
        this.name=name;
        this.age=age;
        this.degree=degree;
    }
    Undergraduate(){

    }
    public void show(){
        System.out.print("name:"+name+"\t");
        System.out.print("age:"+age+"\t");
        System.out.println("degree:"+degree);
    }
}