Java Hour getHourOfWeek(Date dateIn)

Description

Returns the hour of the week in the range of 1 to 168.

License

Open Source License

Parameter

Parameter	Description
dateIn	the date to extract the hour of the week.

Exception

Parameter	Description
IllegalArgumentException	if the parameter dateIn is null.

Return

an integer in the range of 1 to 168. 1 being the first hour of Sunday.

Declaration

public static int getHourOfWeek(Date dateIn) 

Method Source Code

//package com.java2s;
/*/*from ww w. j a  v  a2  s . c  o m*/
 * #%L
 * org.bml
 * %%
 * Copyright (C) 2006 - 2014 Brian M. Lima
 * %%
 * This file is part of ORG.BML.
 * 
 *     ORG.BML is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 * 
 *     ORG.BML 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 ORG.BML.  If not, see <http://www.gnu.org/licenses/>.
 * #L%
 */

import java.util.Calendar;
import java.util.Date;

public class Main {
    /**Returns the hour of the week in the range of 1 to 168. 1 being the first hour of 
     * Sunday, 168 being the last hour of Saturday.
     * 
     * @param dateIn the date to extract the hour of the week.
     * @return an integer in the range of 1 to 168. 1 being the first hour of 
     * Sunday.
     * @throws IllegalArgumentException if the parameter dateIn is null.
     */
    public static int getHourOfWeek(Date dateIn) {
        if (dateIn == null) {
            throw new IllegalArgumentException("Can not operate on a null Date object.");
        }
        Calendar cal = Calendar.getInstance();
        cal.setTime(dateIn);
        return ((cal.get(Calendar.DAY_OF_WEEK) - 1) * 24) + cal.get(Calendar.HOUR_OF_DAY);

    }
}

Related

1. getHourMinuteString(Date dateTime)
2. getHourMinuteString(Date t)
3. getHourOfDay(Calendar date)
4. getHourOfDay(final Date date)
5. getHourOfDayInAm(Date dt)
6. getHours()
7. getHours()
8. getHours(Date t, Date baseDate)
9. getHours(final Date date)