Here you can find the source of setHourMinSecAsNull(Calendar calendar)
private static void setHourMinSecAsNull(Calendar calendar)
//package com.java2s; /*//from w ww . j a va2s .co m * Copyright (c) 2015 www.see-r.com * All rights reserved * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.util.Calendar; public class Main { private static void setHourMinSecAsNull(Calendar calendar) { calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); } }