Main.java Source code

Introduction

Here is the source code for Main.java

Source

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

public class Main {
    public static void main(String[] args) throws ParseException {
        String dateOne = "20-03-2014 16:14:13 GMT";
        String dateTwo = "25-03-2015 23:11:19 GMT";
        String format = "dd-MM-yyyy HH:mm:ss z";
        System.out.println(getDiff(parseDateString(format, dateTwo), parseDateString(format, dateOne)));
    }

    static Calendar parseDateString(final String format, final String date) throws ParseException {
        final Date parsed = new SimpleDateFormat(format).parse(date);
        final Calendar cal = Calendar.getInstance();
        cal.setTime(parsed);
        return cal;
    }

    private static TimeDiff getDiff(final Calendar calOne, final Calendar calTwo) {
        return new TimeDiff(Math.abs(calOne.getTimeInMillis() - calTwo.getTimeInMillis()));
    }
}

class TimeDiff {
    private static final long MS_IN_SECOND = 1000;
    private static final long MS_IN_MINUTE = MS_IN_SECOND * 60;
    private static final long MS_IN_HOUR = MS_IN_MINUTE * 60;
    private static final long MS_IN_DAY = MS_IN_HOUR * 24;
    private final long days;
    private final long hours;
    private final long minutes;
    private final long seconds;
    private final long milliseconds;

    TimeDiff(final long msDiff) {
        long msRemainder = msDiff;
        days = msRemainder / MS_IN_DAY;
        msRemainder = msRemainder - (days * MS_IN_DAY);
        hours = msRemainder / MS_IN_HOUR;
        msRemainder = msRemainder - (hours * MS_IN_HOUR);
        minutes = msRemainder / MS_IN_MINUTE;
        msRemainder = msRemainder - (minutes * MS_IN_MINUTE);
        seconds = msRemainder / MS_IN_SECOND;
        msRemainder = msRemainder - (seconds * MS_IN_SECOND);
        milliseconds = msRemainder;
    }

    @Override
    public String toString() {
        return "TimeDiff[days: " + days + ", hours: " + hours + ", minutes: " + minutes + ", seconds: " + seconds
                + ", milliseconds: " + milliseconds + "]";
    }
}