作业重写

package com.hanqi;

public class f {
    
    public f()
    {
        System.out.println("父类的构造函数");
    }
    public String fa1;
    public String fa2;
    public String getFa1() {
        return fa1;
    }
    public void setFa1(String fa1) {
        this.fa1 = fa1;
    }
    public String getFa2() {
        return fa2;
    }
    public void setFa2(String fa2) {
        this.fa2 = fa2;
    }
    public void x()
    {
        System.out.println("方法一");
    }
    
    public void y()
    {
        System.out.println("方法二");
    }

}

package com.hanqi;

public class s extends f{
    
    public s()
    {
        System.out.println("子类的构造函数");
    }
    
    public void y()
    {
        System.out.println("覆盖方法二");
    }
    
    
}

package com.hanqi;

import java.util.*;

public class fs {

    public static void main(String[] args) {
        
        s S = new s();
        
        S.x();
        
        S.y();
        
        f f1 = new s();
        
        f1.x();
        
        f1.y();
        
        

    }

}