Java Timestamp addDays(Timestamp day, int offset)

Description

Return Day + offset (truncates)

License

Open Source License

Parameter

Parameter	Description
day	Day
offset	day offset

Return

Day + offset at 00:00

Declaration

static public Timestamp addDays(Timestamp day, int offset) 

Method Source Code

//package com.java2s;
/******************************************************************************
 * The contents of this file are subject to the   Compiere License  Version 1.1
 * ("License"); You may not use this file except in compliance with the License
 * You may obtain a copy of the License at http://www.compiere.org/license.html
 * Software distributed under the License is distributed on an  "AS IS"  basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
 * the specific language governing rights and limitations under the License.
 * The Original Code is Compiere ERP & CRM Smart Business Solution. The Initial
 * Developer of the Original Code is Jorg Janke. Portions created by Jorg Janke
 * are Copyright (C) 1999-2005 Jorg Janke.
 * All parts are Copyright (C) 1999-2005 ComPiere, Inc.  All Rights Reserved.
 * Contributor(s): ______________________________________.
 *****************************************************************************/

import java.sql.Timestamp;

import java.util.Calendar;

import java.util.GregorianCalendar;

public class Main {
    /**/* w  w  w. ja v  a2  s.  c  o m*/
     *    Return Day + offset (truncates)
     *    @param day Day
     *    @param offset day offset
     *    @return Day + offset at 00:00
     */
    static public Timestamp addDays(Timestamp day, int offset) {
        if (day == null)
            day = new Timestamp(System.currentTimeMillis());
        //
        GregorianCalendar cal = new GregorianCalendar();
        cal.setTime(day);
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        if (offset == 0)
            return new Timestamp(cal.getTimeInMillis());
        cal.add(Calendar.DAY_OF_YEAR, offset); //   may have a problem with negative (before 1/1)
        return new Timestamp(cal.getTimeInMillis());
    }
}

Related

1. add(Timestamp target, int addNum, int addKind)
2. add(Timestamp ts, int field, int amount)
3. addDate(Timestamp date, String type, int into)
4. addDays(Timestamp date, int days)
5. addDaysToTimestamp(Timestamp start, int days)
6. addDaysToTimestamp(Timestamp timestamp, int numDays)
7. addHours(Timestamp date, int numOfHours)
8. addHoursToTimestamp(Timestamp start, int hours)