Here you can find the source of durationToString(long durationMs)
public static String durationToString(long durationMs)
//package com.java2s; /**/*from ww w . j a v a2s . c o m*/ * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ public class Main { /** * Converts a time duration in milliseconds into DDD:HH:MM:SS format. */ public static String durationToString(long durationMs) { boolean negative = false; if (durationMs < 0) { negative = true; durationMs = -durationMs; } // Chop off the milliseconds long durationSec = durationMs / 1000; final int secondsPerMinute = 60; final int secondsPerHour = 60 * 60; final int secondsPerDay = 60 * 60 * 24; final long days = durationSec / secondsPerDay; durationSec -= days * secondsPerDay; final long hours = durationSec / secondsPerHour; durationSec -= hours * secondsPerHour; final long minutes = durationSec / secondsPerMinute; durationSec -= minutes * secondsPerMinute; final long seconds = durationSec; final long milliseconds = durationMs % 1000; String format = "%03d:%02d:%02d:%02d.%03d"; if (negative) { format = "-" + format; } return String.format(format, days, hours, minutes, seconds, milliseconds); } }