Here you can find the source of formattedMillis(long millis)
public static String formattedMillis(long millis)
//package com.java2s; /*//from w w w . j a v a2s . c om Copywrite 2012 Will Winder This file is part of Universal Gcode Sender (UGS). UGS 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. UGS 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 UGS. If not, see <http://www.gnu.org/licenses/>. */ public class Main { public static String formattedMillis(long millis) { String format = String.format("%%0%dd", 2); long elapsedTime = millis / 1000; String hours = String.format(format, elapsedTime / 3600); elapsedTime %= 3600; String minutes = String.format(format, elapsedTime / 60); elapsedTime %= 60; String seconds = String.format(format, elapsedTime); String time = hours + ":" + minutes + ":" + seconds; return time; } }