Here you can find the source of today()
public static Date today()
//package com.java2s; /*/*ww w . ja v a 2 s.c o m*/ * Copyright (c) 1999-2002 Erry Network Technology, Inc. All Rights Reserved. * * This software is the confidential and proprietary information of Erry * Network Technology, Inc. ("Confidential Information"). You shall not * disclose such Confidential Information and shall use it only in * accordance with the terms of the license agreement you entered into * with Erry. * * ERRY MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR * PURPOSE, OR NON-INFRINGEMENT. ERRY SHALL NOT BE LIABLE FOR ANY DAMAGES * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING * THIS SOFTWARE OR ITS DERIVATIVES. * * $Archive: /src/work/com/erry/its/model/tools/DateUtil.java $ $Revision: 1.2 $ */ import java.util.Calendar; import java.util.Date; public class Main { public static Date today() { return roundDate(now()); } /** * Set hour, minute, second, millisecond of _c to 0. */ public static Date roundDate(Date _d) { Calendar c = Calendar.getInstance(); c.setTime(_d); return roundCalendar(c).getTime(); } /** * get the current time */ public static Date now() { return Calendar.getInstance().getTime(); } /** * Set hour, minute, second, millisecond of _c to 0. */ public static Calendar roundCalendar(Calendar _c) { _c.set(Calendar.HOUR_OF_DAY, 0); _c.set(Calendar.MINUTE, 0); _c.set(Calendar.SECOND, 0); _c.set(Calendar.MILLISECOND, 0); return _c; } }