java计算时间差 （日时分秒）

计算俩时间的时间差：
package com.nft.web.front.controller.goods;

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

public class DateDiffi {
public static void main(String[] args) {
String dateStart = “2022-11-01 09:29:58”;
String dateStop = “2022-11-20 11:31:48”;
DateDiffi.dateDiffi(dateStart,dateStop);
}

public static String dateDiffi(String dateStart,String dateStop){
    String remainTime = null;
    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    Date d1 = null;
    Date d2 = null;
    try {
        d1 = format.parse(dateStart);
        d2 = format.parse(dateStop);
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//毫秒ms
long diff = d2.getTime() - d1.getTime();
long diffSeconds = diff / 1000 % 60;
long diffMinutes = diff / (60 * 1000) % 60;
long diffHours = diff / (60 * 60 * 1000) % 24;
long diffDays = diff / (24 * 60 * 60 * 1000);
remainTime = diffDays + “天” + diffHours + “小时”+diffMinutes + “分钟”+diffSeconds + “秒”;
System.out.print(remainTime);
} catch (Exception e) {
e.printStackTrace();
}
return remainTime;
}
}