Here you can find the source of roundToDay(long time)
public static long roundToDay(long time)
//package com.java2s; /*//from ww w. j av a2 s .c o m * aocode-public - Reusable Java library of general tools with minimal external dependencies. * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2013, 2016, 2018 AO Industries, Inc. * support@aoindustries.com * 7262 Bull Pen Cir * Mobile, AL 36695 * * This file is part of aocode-public. * * aocode-public is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * aocode-public 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. * * You should have received a copy of the GNU Lesser General Public License * along with aocode-public. If not, see <http://www.gnu.org/licenses/>. */ public class Main { /** * Rounds the time to an exact day. */ public static long roundToDay(long time) { return time / (24 * 60 * 60) * (24 * 60 * 60); } }