Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.Calendar;

public class Main {
    public static void main(String[] args) throws Exception {
        Calendar start = Calendar.getInstance();
        start.set(2015, 1, 21, 11, 1, 11);
        Calendar end = Calendar.getInstance();

        Calendar clone = (Calendar) start.clone();
        int year = elapsed(clone, end, Calendar.YEAR);
        System.out.println(year + " year");
        clone.add(Calendar.YEAR, year);
        int month = elapsed(clone, end, Calendar.MONTH);
        clone.add(Calendar.MONTH, month);
        System.out.println(month + " month");

        int date = elapsed(clone, end, Calendar.DATE);
        clone.add(Calendar.DATE, date);
        System.out.println(date + " day");

        int hour = (int) (end.getTimeInMillis() - clone.getTimeInMillis()) / 3600000;
        clone.add(Calendar.HOUR, hour);
        System.out.println(hour + " hour");

        int minute = (int) (end.getTimeInMillis() - clone.getTimeInMillis()) / 60000;
        clone.add(Calendar.MINUTE, minute);
        System.out.println(minute + " minute");

        int millis = (int) (end.getTimeInMillis() - clone.getTimeInMillis()) / 1000;
        System.out.println(millis + " millis");

    }

    private static int elapsed(Calendar before, Calendar after, int field) {
        Calendar clone = (Calendar) before.clone();
        int elapsed = -1;
        while (!clone.after(after)) {
            clone.add(field, 1);
            elapsed++;
        }
        return elapsed;
    }

}