三天打鱼两天晒网，用java语言实现

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Scanner;


public class YuFu {
    public static void main(String[] args) throws ParseException {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入年份（例：1990）：");
        String year = scanner.nextLine();
        System.out.print("请输入月份（例：01）：");
        String month = scanner.nextLine();
        if (month.length() == 1) {
            month = 0 + month;
        }
        System.out.print("请输入日期（例：01）：");
        String day = scanner.nextLine();
        if (day.length() == 1) {
            day = 0 + day;
        }
        String date = year + '-' + month + '-' + day;
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");
        Date date1 = simpleDateFormat.parse(date);
        String begin = "1990-01-01";
        Date date2 = simpleDateFormat.parse(begin);
        long days = (date1.getTime() - date2.getTime()) / (1000 * 60 * 60 * 24);
        long key = days % 5 + 1;
        if (key == 1 || key == 2 || key == 3) {
            System.out.println("打鱼");
        } else {
            System.out.println("晒网");
        }
    }
}