Java Calendar Month endOfMonth(Calendar calendar)

Description

Adjusts the calendar to the end of the current month.

License

Open Source License

Parameter

Parameter	Description
calendar	a parameter

Declaration

public static void endOfMonth(Calendar calendar) 

Method Source Code

//package com.java2s;
/*//ww w .  j a  v a 2 s.  c  o m
 * #%L
 * The AIBench Plugin Manager Plugin
 * %%
 * Copyright (C) 2006 - 2016 Daniel Glez-Pe?a and Florentino Fdez-Riverola
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
 * #L%
 */

import java.util.Calendar;
import java.util.Date;

public class Main {
    /**
     * Adjusts the calendar to the end of the current month.
     * That is the last day of the month with all time-fields
     * at max.
     * 
     * @param calendar
     */
    public static void endOfMonth(Calendar calendar) {
        // start of next month
        calendar.add(Calendar.MONTH, 1);
        startOfMonth(calendar);
        // one millisecond back
        calendar.add(Calendar.MILLISECOND, -1);
    }

    /**
     * Adjusts the calendar to the start of the current month.
     * That is, first day of the month with all time fields cleared.
     * @param calendar
     */
    public static void startOfMonth(Calendar calendar) {
        calendar.set(Calendar.DAY_OF_MONTH, 1);
        startOfDay(calendar);
    }

    /**
     * Adjust the given calendar to the first millisecond of the given date.
     * that is all time fields cleared. The Date of the adjusted Calendar is
     * returned. 
     * 
     * @param calendar calendar to adjust.
     * @param date the Date to use.
     * @return the start of the day of the given date
     */
    public static Date startOfDay(Calendar calendar, Date date) {
        calendar.setTime(date);
        startOfDay(calendar);
        return calendar.getTime();
    }

    /**
     * Adjust the given calendar to the first millisecond of the current day.
     * that is all time fields cleared.
     * 
     * @param calendar calendar to adjust.
     */
    public static void startOfDay(Calendar calendar) {
        calendar.set(Calendar.HOUR_OF_DAY, 0);
        calendar.set(Calendar.MILLISECOND, 0);
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MINUTE, 0);
    }
}

Related

1. calendarMonthToInt(int calendarMonth)
2. calToLastDayOfMonth(Calendar c)
3. convertRemoveAfterMonth(Calendar cal)
4. floorDayOfMonth(Calendar cal)
5. getCalDayofMonth(Date calendarDay)
6. getDayOfMonthPostfix(Calendar cal)
7. getDaysInMonth(Calendar cal)