Java Calendar Calculate calcDifferenceAsDays(Calendar aBaseDate, Calendar aTargetDate)

Description

calc Difference As Days

License

Apache License

Declaration

public static Integer calcDifferenceAsDays(Calendar aBaseDate, Calendar aTargetDate) 

Method Source Code

//package com.java2s;
/*//from ww w.jav a 2s  . co m
 * Copyright 2012 Hiromasa Horiguchi ( The University of Tokyo )
 * 
 * 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;

public class Main {

    public static Integer calcDifferenceAsDays(Calendar aBaseDate, Calendar aTargetDate) {
        long tDifference = aTargetDate.getTimeInMillis() - aBaseDate.getTimeInMillis();
        // 86400000 = 1000[msec] * 60[sec] * 60[min] * 24[hour], Long.MAX_VALUE / 86400000 < Integer.MAX_VALUE
        return (int) (tDifference / 86400000);
    }
}

Related

1. addTime(int calendarType, long time, int number)
2. alignHours(int interval, Calendar timestamp)
3. alignSecond(Calendar timestamp)
4. cal2Str(Calendar pCal)
5. calcAge(Calendar dateOfBirth, Calendar now)
6. calcDifferenceAsYearsPrivate(Calendar aBaseDate, Calendar aTargetDate)
7. calcTime(Date end, Date start, int calendarField)
8. calcTimezone(Calendar cal)
9. calculateDuration(Calendar para_c1, Calendar para_c2)