Here you can find the source of getMidnightCalendarInstance()
public static Calendar getMidnightCalendarInstance()
//package com.java2s; /**//from www .ja v a2 s .c om * Tysan Clan Website * Copyright (C) 2008-2013 Jeroen Steenbeeke and Ties van de Ven * * This program 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. * * 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.util.Calendar; import java.util.Locale; import java.util.TimeZone; public class Main { public static final TimeZone NEW_YORK = TimeZone.getTimeZone("America/New_York"); public static Calendar getMidnightCalendarInstance() { Calendar cal = Calendar.getInstance(NEW_YORK, Locale.US); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); return cal; } public static Calendar getMidnightCalendarInstance(TimeZone timezone) { Calendar cal = Calendar.getInstance(timezone, Locale.US); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); return cal; } }