Java Calendar Day moveToCalendarDayJust(Calendar cal)

Description

move To Calendar Day Just

License

Apache License

Declaration

public static void moveToCalendarDayJust(Calendar cal) 

Method Source Code

//package com.java2s;
/*//from ww  w.jav a  2 s.  c om
 * Copyright 2014-2015 the original author or authors.
 *
 * 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 void moveToCalendarDayJust(Calendar cal) { // 2011/11/17 00:00:00.000
        moveToCalendarDayJust(cal,
                cal.getActualMinimum(Calendar.HOUR_OF_DAY));
    }

    public static void moveToCalendarDayJust(Calendar cal, int dayBeginHour) {
        final int realBeginValue;
        if (dayBeginHour >= 0) {
            realBeginValue = dayBeginHour;
        } else {
            realBeginValue = (dayBeginHour * -1); // remove minus
            addCalendarDay(cal, -1);
        }
        moveToCalendarHour(cal, realBeginValue);
        clearCalendarMinuteWithRear(cal);
    }

    public static void addCalendarDay(Calendar cal, int days) {
        cal.add(Calendar.DAY_OF_MONTH, days);
    }

    public static void moveToCalendarHour(Calendar cal, int hour) {
        assertArgumentNotMinusInteger("hour", hour);
        cal.set(Calendar.HOUR_OF_DAY, hour);
    }

    public static void clearCalendarMinuteWithRear(Calendar cal) {
        cal.set(Calendar.MINUTE, cal.getActualMinimum(Calendar.MINUTE));
        clearCalendarSecondWithRear(cal);
    }

    protected static void assertArgumentNotMinusInteger(String name,
            int value) {
        if (value < 0) {
            String msg = "The argument '" + name
                    + "' should be plus or zero value: " + value;
            throw new IllegalArgumentException(msg);
        }
    }

    public static void clearCalendarSecondWithRear(Calendar cal) {
        cal.set(Calendar.SECOND, cal.getActualMinimum(Calendar.SECOND));
        clearCalendarMillisecond(cal);
    }

    public static void clearCalendarMillisecond(Calendar cal) {
        cal.set(Calendar.MILLISECOND,
                cal.getActualMinimum(Calendar.MILLISECOND));
    }
}

Related

1. isTodayOff(String days, Calendar calendar)
2. isWithinDaysFuture(Calendar cal, int days)
3. julianDay(Calendar calendar)
4. minOfDay(Calendar calendar)
5. moveToCalendarDay(Calendar cal, int day)
6. newCalendarForDay(Date date)
7. resetToBeginningOfDay(Calendar c)
8. sameDay(Calendar a, Calendar b)
9. sameDay(Calendar c1, Calendar c2)