Here you can find the source of isSecondsWholeHour(long secs)
public static boolean isSecondsWholeHour(long secs)
//package com.java2s; /*!/*from w ww . j a v a2 s . co m*/ * This program is free software; you can redistribute it and/or modify it under the * terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software * Foundation. * * You should have received a copy of the GNU Lesser General Public License along with this * program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html * or from the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. * * 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 Lesser General Public License for more details. * * Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved. */ public class Main { public static final int MINUTES_IN_HOUR = 60; public static final int SECONDS_IN_MINUTE = 60; public static boolean isSecondsWholeHour(long secs) { return (hoursToSecs(secsToHours(secs))) == secs; } public static long hoursToSecs(long hours) { return minutesToSecs(hours * MINUTES_IN_HOUR); } public static long secsToHours(long secs) { return secs / MINUTES_IN_HOUR / SECONDS_IN_MINUTE; } public static long minutesToSecs(long minutes) { return minutes * SECONDS_IN_MINUTE; } }