Java Day of Week toWeekDayUS(Date date, int expect)

Description

to Week Day US

License

Apache License

Declaration

private static Date toWeekDayUS(Date date, int expect) 

Method Source Code

//package com.java2s;
/*// w  ww  .  j  a  va2s  .  c  o  m
 * JEF - Copyright 2009-2010 Jiyi (mr.jiyi@gmail.com)
 *
 * Licensed 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 {
    private static Date toWeekDayUS(Date date, int expect) {
        int day = getWeekDay(date);
        return adjustDate(date, 0, 0, expect - day);
    }

    public static int getWeekDay(Date d) {
        if (d == null)
            return -1;
        final Calendar c = new GregorianCalendar();
        c.setTime(d);
        return c.get(Calendar.DAY_OF_WEEK) - 1;
    }

    public static Date adjustDate(Date date, int year, int month, int day) {
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        c.add(Calendar.YEAR, year);
        c.add(Calendar.MONTH, month);
        c.add(Calendar.DAY_OF_YEAR, day);
        return c.getTime();
    }

    public static final Date get(int year, int month, int date) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(year, month - 1, date, 0, 0, 0);
        calendar.set(Calendar.MILLISECOND, 0);
        return calendar.getTime();
    }

    public static final Date get(int year, int month, int date, int hour, int minute, int second) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(year, month - 1, date, hour, minute, second);
        calendar.set(Calendar.MILLISECOND, 0);
        return calendar.getTime();
    }
}

Related

1. nextWeek(final Date date)
2. previousWeek(long date)
3. previousWeek(long date)
4. startOfWeek(Date date)
5. toStartWeek(Date date)
6. truncDateToIsoWeek(Date d)
7. weekCount(Date start, Date end)
8. weekDay(final Date date)
9. weekDaysBetween(final Date a, final Date b)