Here you can find the source of getHoursByDate(Date date, int hours)
public static final Date getHoursByDate(Date date, int hours)
//package com.java2s; /**//from ww w . j ava 2 s .c o m * DateTimeUtil.java * * Copyright 2010 @company@, Inc. * * @company@ licenses this file to you under the Apache License, version 2.0 * (the "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. */ import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; public class Main { public static final Date getHoursByDate(Date date, int hours) { GregorianCalendar cal = new GregorianCalendar(); cal.setTime(date); cal.add(Calendar.HOUR_OF_DAY, hours); return cal.getTime(); } }