练习：“三天打鱼两天晒网”

 1 package com.yhqtv.exer;
 2 
 3 import java.text.ParseException;
 4 import java.text.SimpleDateFormat;
 5 import java.util.Date;
 6 import java.util.Scanner;
 7 
 8 /*
 9  * 练习：“三天打鱼两天晒网”  1990-01-01 开始
10  * @author  XMKJ  yhqtv.com Email:yhqtv@qq.com
11  * @create 2020-05-01-12:57
12  *1990-01-01 00:00
13  */
14 public class San {
15     public static void main(String[] args) throws ParseException {
16         while (true) {
17             SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
18             //接收输入的时间并且转换成Date格式
19             System.out.println("请输入年月日（例如1990-01-01）");
20             Scanner sc = new Scanner(System.in);
21             String st = sc.next();
22             Date inputDate = sdf.parse(st);
23             //计算开始的的时间
24             String s = "1990-01-01";
25             Date parse1 = sdf.parse(s);
26 
27 
28             long l = inputDate.getTime() - parse1.getTime();
29 
30             long l1 = l / (24 * 60 * 60 * 1000)+1;
31 
32             if (l1 % 5 == 1 || l1 % 5 == 2 || l1 % 5 == 3) {
33                 System.out.println("在打鱼");
34             } else {
35                 System.out.println("在晒网");
36             }
37         }
38     }
39 }