距1990.1.1有多少天

package com.exercise.date;

/**
 * @Author：Zxb
 * @Version：1.0
 * @Date：2022/11/20-11:59
 * @Since：jdk1.8
 * @Description：
 */
public class date {
    public static void main(String[] args) {
        exercise();
    }

    private static void exercise(){
        int year=1990;
        int month=2;
        int totalDay=22;

        for (int y = 1990; y < year; y++) {
            if(y%4==0&&y%100!=0||y%400==0){
                //闰年
                totalDay+=366;
            }else{
                totalDay+=365;
            }
        }
        for (int m = 1; m < month; m++) {
            switch (m){
                case 1:
                case 3:
                case 5:
                case 7:
                case 8:
                case 10:
                    totalDay+=31;
                    break;
                case 2:
                    if(year%4==0&&year%100!=0||year%400==0){
                        //闰年
                        totalDay+=29;
                    }else{
                        totalDay+=28;
                    }
                    break;
                    default:
                        totalDay+=30;
                        break;
            }
        }
        System.out.println("总天数："+(totalDay-1));

    }
}