Question

因此，下面的代码应该打印名称，但相反，我得到以下结果 com.flight.Passenger@659e0bfdAs ，根据我的理解，应该覆盖toString方法，如果我错了请纠正我，如果我是对的，请帮助我覆盖toString方法。

非常感谢您的快速回复，但我仍然有以下问题：

由于我获得了成功的结果，但有没有办法可以打印像Bob，Reeta等参考变量的名称？

package com.flight;

import java.util.Arrays;

public class Passenger implements Comparable  {

    private int memberLevel; 
    private int memberDays;
    public void setLevel(int memberLevel, int memberDays)
    {
        this.memberLevel = memberLevel;
        this.memberDays = memberDays;
    }

    public int compareTo(Object o)
    {
        Passenger p = (Passenger) o;

        if(memberLevel> p.memberLevel)
            return -1; //negative comes first
        else if(memberLevel< p.memberLevel)
            return 1; // positive comes afterwards
        else {
            if(memberDays> p.memberDays)
                return -1;
            else if(memberDays< p.memberDays)
                return 1;
            else
                return 0;
        }

    }

    public static void main (String[] args)
    {

        Passenger Bob = new Passenger();
        Passenger Reeta = new Passenger();
        Passenger Mannat = new Passenger();
        Passenger Asses = new Passenger();

        Bob.setLevel(1,40);
        Reeta.setLevel(1,55);
        Mannat.setLevel(2,50);
        Asses.setLevel(1,95);

        Passenger[] pa = {Bob,Reeta,Mannat, Asses};
        //Arrays.sort(pa);
        for(Passenger pb : pa)
        System.out.println(pb);

    }


}

Answer 1

@Override
    public String toString() {
        return this. memberLevel + " " + this. memberDays;
    }

需要在java中更新toString方法

1 个答案: