继承demo

package jichengdemo;
/*
 * 写了一个简单的继承demo ，student继承person，通过代码练习发现，父类里面不能有构造方法
 */
public class JiChengDemo {
public static void main(String[] args) {
    student s = new student();
    s.setname("lixinghua");
    s.setage(89);
    s.setschool("清华大学");
    System.out.println(s.getname()+s.getage()+s.getschool());
    
}
}
class person{
    private String name;
    private int age;
    public void setname(String name){
        this.name =name;
    }
    public void setage(int age){
        this.age = age;
    }
    public String getname(){
        return this.name ;
    }
    public int getage(){
        return this.age;
    }
}
class student extends person{
 //student 类继承person的属性和方法；
    private String school ;
    public void setschool(String school){
        this.school = school;
    }
    public String getschool(){
        return this.school ;
    }
    
}