Here you can find the source of getHourFromDate(Date date)
public static Integer getHourFromDate(Date date)
//package com.java2s; /*//from w ww .j a v a 2 s.c o m * (C) Copyright 2015-2016 Opencell SAS (http://opencellsoft.com/) and contributors. * (C) Copyright 2009-2014 Manaty SARL (http://manaty.net/) and contributors. * * 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. * This program is not suitable for any direct or indirect application in MILITARY industry * 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; import java.util.Date; public class Main { public static Integer getHourFromDate(Date date) { Integer result = null; if (date != null) { Calendar calendar = Calendar.getInstance(); calendar.setTime(date); result = calendar.get(Calendar.HOUR); } return result; } }