Java Time Different timeDiff(Calendar calenndarCurrentTime, Calendar calenndarStartTime)

Description

time Diff

License

Open Source License

Declaration

public static String timeDiff(Calendar calenndarCurrentTime, Calendar calenndarStartTime) 

Method Source Code

//package com.java2s;
/*// www  .  ja v a 2s  .c  o m
 * To change this license header, choose License Headers in Project Properties.
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 * and open the template in the editor.
 */

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

import java.util.Locale;
import java.util.TimeZone;

public class Main {
    public static String timeDiff(String currentTime, String startTime) {
        if (currentTime == null || startTime == null) {
            return "00:00:00";
        }
        Calendar calenndarCurrentTime = toCalendar(currentTime);
        Calendar calenndarStartTime = toCalendar(startTime);
        return timeDiff(calenndarCurrentTime, calenndarStartTime);
    }

    public static String timeDiff(Calendar calenndarCurrentTime, Calendar calenndarStartTime) {

        long startTime = calenndarStartTime.getTimeInMillis();
        long currentTime = calenndarCurrentTime.getTimeInMillis();
        SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");

        dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
        long elapsed = currentTime - startTime;

        return dateFormat.format(new Date(elapsed));
    }

    /**
     * @param yyyymmddhhmmss ex. "20070101120500" , "20530101120500"
     * @return Calendar
     * @example Calendar c =
     * DateUtils.convertStringDateTimeToCalendar("20070101120500");
     */
    public static Calendar toCalendar(String yyyymmddhhmmss) {
        int year = Integer.parseInt(yyyymmddhhmmss.substring(0, 4));
        if (year > 2400) {
            year = year - 543;
        }
        int month = Integer.parseInt(yyyymmddhhmmss.substring(4, 6)) - 1;
        int day = Integer.parseInt(yyyymmddhhmmss.substring(6, 8));
        int hh = Integer.parseInt(yyyymmddhhmmss.substring(8, 10));
        int mm = Integer.parseInt(yyyymmddhhmmss.substring(10, 12));
        int ss = Integer.parseInt(yyyymmddhhmmss.substring(12, 14));
        Calendar date = Calendar.getInstance(Locale.US);
        date.set(year, month, day, hh, mm, ss);
        return date;
    }
}

Related

1. getTimeDiffMin(String format, String startDate, String endDate)
2. isDateDiff_2(String pattern, String time2, String time1)
3. isLowerThanMinTimeDiff(Date lastUpdate, Date now, Long minTimeDiff)
4. printTimeDiff(Long oldDate, Long newDate, String message)
5. printTimeDiffNano(String message, long start)
6. timeDiff(Date salida, Date llegada)