Here you can find the source of clearDate(Date dateTime)
public static Date clearDate(Date dateTime)
//package com.java2s; /**//from w ww.j a v a 2 s . com * The contents of this file are subject to the Regenstrief Public License * Version 1.0 (the "License"); you may not use this file except in compliance with the License. * Please contact Regenstrief Institute if you would like to obtain a copy of the license. * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the * License for the specific language governing rights and limitations * under the License. * * Copyright (C) Regenstrief Institute. All Rights Reserved. */ import java.util.*; public class Main { public static Date clearDate(Date dateTime) { if (dateTime == null) { return null; } Calendar cal = Calendar.getInstance(); cal.setTime(dateTime); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); Date dateWithoutTime = cal.getTime(); return dateWithoutTime; } }