Java Calendar Calculate calculateHourDiff(Calendar cal1, Calendar cal2)

Description

calculate Hour Diff

License

Open Source License

Declaration

private static int calculateHourDiff(Calendar cal1, Calendar cal2) 

Method Source Code

//package com.java2s;

import java.util.Calendar;

public class Main {
    public static final int SECOND = 1;
    public static final int MINUTE = 2;
    private static final long MILLISECOND_IN_HOUR = 1000 * 60 * 60;

    private static int calculateHourDiff(Calendar cal1, Calendar cal2) {
        int mil2 = cal2.get(Calendar.MILLISECOND);
        int mil1 = cal1.get(Calendar.MILLISECOND);
        int sec2 = cal2.get(Calendar.SECOND);
        int sec1 = cal1.get(Calendar.SECOND);
        int min2 = cal2.get(Calendar.MINUTE);
        int min1 = cal1.get(Calendar.MINUTE);

        cal2.set(Calendar.MINUTE, 0);
        cal1.set(Calendar.MINUTE, 0);
        cal2.set(Calendar.SECOND, 0);
        cal1.set(Calendar.SECOND, 0);
        cal2.set(Calendar.MILLISECOND, 0);
        cal1.set(Calendar.MILLISECOND, 0);

        int result = (int) ((cal2.getTimeInMillis() - cal1.getTimeInMillis()) / MILLISECOND_IN_HOUR);

        cal2.set(Calendar.MINUTE, min2);
        cal1.set(Calendar.MINUTE, min1);
        cal2.set(Calendar.SECOND, sec2);
        cal1.set(Calendar.SECOND, sec1);
        cal2.set(Calendar.MILLISECOND, mil2);
        cal1.set(Calendar.MILLISECOND, mil1);
        return result;
    }//w  ww  . ja  v a  2  s. c  o m
}

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2. calcDifferenceAsYearsPrivate(Calendar aBaseDate, Calendar aTargetDate)
3. calcTime(Date end, Date start, int calendarField)
4. calcTimezone(Calendar cal)
5. calculateDuration(Calendar para_c1, Calendar para_c2)
6. calculateMinimalDaysInFirstWeek(Calendar calendar)
7. calculateMonthsInBetween(Calendar startPoint, Calendar endPoint)
8. calculateRangeInDays(Calendar start, Calendar end)
9. calculateWeeksInBetween(Calendar startPoint, Calendar endPoint)