比较器 转换int

package com.day09.lianXi;

import java.util.ArrayList;
import java.util.Comparator;
import java.util.Scanner;
import java.util.TreeSet;

public class Demo01 {
	public static void main(String[] args) {
		/**
		键盘录入5个学生信息(姓名,语文成绩,数学成绩,英语成绩),
			按照总分从高到低输出到控制台。
		 */
//		Demo05();
	}
//	Integer.parseInt(变量)  解析为int
	public static void Demo05() {
		TreeSet<Student> ts = new TreeSet<Student>();
		//类里有调用比较器就不添加  没有调用就需要自己制造并调用
		//TreeSet<Student> ts = new TreeSet<Student>(new 比较器);
		for(int i=0;i<3;i++){
			Scanner sc =new Scanner(System.in);
			System.out.println("第"+(i+1)+"位学生，请输入姓名");
			String name = sc.next();
			System.out.println("请输入语文成绩");
			int yuWen = sc.nextInt();
			System.out.println("请输入数学成绩");
			int math = sc.nextInt();
			System.out.println("请输入英语成绩");
			int english = sc.nextInt();
			ts.add(new Student(name,yuWen,math,english));
		}
		for (Student s : ts) {
			System.out.println(s);
		}
	}
	
	
class MyComparator implements Comparator<Character>{ //不去重复排序

	@Override
	public int compare(Character o1, Character o2) {
		int co = o1.compareTo(o2); //正数，怎么存，怎么取
		return co==0?1:co;
	}
} 
class MyComparator01 implements Comparator<Integer>{//倒序排序
	@Override
	public int compare(Integer o1, Integer o2) {
		
		return o2-o1;
	}
}
class MyComparator02 implements Comparator<String>{//去重复
	@Override
	public int compare(String o1, String o2) {
		int num = o1.compareTo(o2);
		return num==0?1:num;
	}
}