# 集合框架

public class Student {
    //
    private String name;
    private int yw;
    private int shuxue;
    private int eng;
    private int sum;

    public Student(String name, int yw, int shuxue, int eng){
        this.name = name;
        this.yw = yw;
        this.shuxue = shuxue;
        this.eng = eng;
        this.sum = yw + shuxue + eng;
    }

    public int getSum() {
        return sum;
    }

    public void setSum(int sum) {
        this.sum = sum;
    }

    @Override
    public String toString() {
        return "{" +
                "name='" + name + '\'' +
                ", sum=" + sum +
                '}';
    }
}
---------------------------------
package com.zhou.y2;

import java.sql.Array;
import java.util.*;

public class Test {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入: 姓名, 语文成绩, 数学成绩, 英语成绩");



        TreeSet<Student> ts = new TreeSet<>(new Comparator<Student>(){
            @Override
            public int compare(Student s1, Student s2) {
                int num = s2.getSum() - s1.getSum();
                return num == 0? 1 : num;
            }
        });
        while (ts.size() <= 2){
            String str = sc.nextLine();
            String[] arr = str.split(",");
            Integer yu = Integer.parseInt(arr[1]);
            Integer shu = Integer.parseInt(arr[2]);
            Integer wai = Integer.parseInt(arr[3]);
            ts.add(new Student(arr[0], yu, shu, wai));
        }
        for (Student s : ts){
            System.out.println(s);
        }
        System.out.println(ts);
    }
}