Java tutorial
//package com.java2s; /* * Copyright 2014 OpenMarket Ltd * * Licensed 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. */ import java.text.SimpleDateFormat; import java.util.Date; import java.util.TimeZone; public class Main { private static SimpleDateFormat mHourMinSecFormat = null; private static SimpleDateFormat mMinSecFormat = null; /** * Format a time in seconds to a HH:MM:SS string. * @param seconds the time in seconds * @return the formatted time */ private static String formatSecondsToHMS(long seconds) { if (null == mHourMinSecFormat) { mHourMinSecFormat = new SimpleDateFormat("HH:mm:ss"); mHourMinSecFormat.setTimeZone(TimeZone.getTimeZone("UTC")); mMinSecFormat = new SimpleDateFormat("mm:ss"); mMinSecFormat.setTimeZone(TimeZone.getTimeZone("UTC")); } if (seconds < 3600) { return mMinSecFormat.format(new Date(seconds * 1000)); } else { return mHourMinSecFormat.format(new Date(seconds * 1000)); } } }