Here you can find the source of getSecondsSinceMidnight(Calendar c)
public static int getSecondsSinceMidnight(Calendar c)
//package com.java2s; /**//from w ww .j a v a2 s .co m * This file is part of JEMMA - http://jemma.energy-home.org * (C) Copyright 2013 Telecom Italia (http://www.telecomitalia.it) * * JEMMA is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License (LGPL) version 3 * or later as published by the Free Software Foundation, which accompanies * this distribution and is available at http://www.gnu.org/licenses/lgpl.html * * JEMMA 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 (LGPL) for more details. * */ import java.util.Calendar; public class Main { public static int getSecondsSinceMidnight(Calendar c) { return 3600 * c.get(Calendar.HOUR_OF_DAY) + 60 * c.get(Calendar.MINUTE) + c.get(Calendar.SECOND); } }