Here you can find the source of truncateCal(final Calendar cal)
public static Calendar truncateCal(final Calendar cal)
//package com.java2s; /*/*w ww . j ava 2 s . c o m*/ Copyright (C) Seun Landsberg 2016 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; public class Main { public static Calendar truncateCal(final Calendar cal) { cal.set(Calendar.MILLISECOND, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.HOUR, 0); return cal; } }