Java Day of Week getWeekDay(Date date)

Description

Get the week day of the specified date.

License

Apache License

Parameter

Parameter	Description
date	the specified date

Return

the week day

Declaration

public static final int getWeekDay(Date date) 

Method Source Code

//package com.java2s;
/**/*from   ww w  .  j a  va  2  s  .c  o  m*/
 * DateTimeUtil.java
 *
 * Copyright 2010 Niolex, Inc.
 *
 * Niolex 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;
import java.util.TimeZone;

public class Main {
    public static final int SECOND = 1000;
    public static final int MINUTE = 60 * SECOND;
    private static TimeZone TIME_ZONE;

    /**
     * Get the week day of the specified date.
     * The week day is specified by {@link Calendar#DAY_OF_WEEK}, from 1(SUNDAY) to 7(SATURDAY)
     *
     * @param date the specified date
     * @return the week day
     * @see Calendar#DAY_OF_WEEK
     */
    public static final int getWeekDay(Date date) {
        GregorianCalendar cal = getCalender(date, false);
        return cal.get(Calendar.DAY_OF_WEEK);
    }

    public static final GregorianCalendar getCalender() {
        return getCalender(new Date(), true);
    }

    public static final GregorianCalendar getCalender(Date date, boolean cleanTime) {
        GregorianCalendar cal = new GregorianCalendar();
        cal.setTime(date);
        if (TIME_ZONE != null) {
            cal.setTimeZone(TIME_ZONE);
        }
        if (cleanTime) {
            cal.set(Calendar.MILLISECOND, 0);
            cal.set(Calendar.SECOND, 0);
            cal.set(Calendar.MINUTE, 0);
            cal.set(Calendar.HOUR_OF_DAY, 0);
        }
        return cal;
    }

    public static final void setTimeZone(TimeZone timeZone) {
        TIME_ZONE = timeZone;
    }
}

Related

1. getWeekChineseIndex(Date curDate)
2. getWeekDate(String date)
3. getWeekDateList(Date today, int index)
4. getWeekday(Date d)
5. getWeekDay(Date d)
6. getWeekDay(Date date)
7. getWeekDay(Date date)
8. getWeekDay(Date date)
9. getWeekDay(Date dt, int weekDay)