Here you can find the source of formatToCountdown(long millis)
public static String formatToCountdown(long millis)
//package com.java2s; /*/*from w w w . ja va 2s. c o m*/ * SBHS-Timetable-Android: Countdown and timetable all at once (Android app). * Copyright (C) 2014 Simon Shields, James Ye * * This file is part of SBHS-Timetable-Android. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ public class Main { public static String formatToCountdown(long millis) { millis = (long) Math.floor(millis / 1000); String sec = "" + (millis % 60); millis -= millis % 60; millis /= 60; String mins = "" + (millis % 60); millis -= millis % 60; millis /= 60; long hrs = millis; if (sec.length() == 1) { sec = "0" + sec; } if (mins.length() == 1) { mins = "0" + mins; } if (hrs != 0) { return hrs + "h " + mins + "m " + sec + "s"; } else { return mins + "m " + sec + "s"; } } }