Java Month Day getDaysInMonth(final Date date)

Description

Returns the number of days in the month given a date

License

Open Source License

Parameter

Parameter	Description
date	date (Month)

Return

the number of days in the month

Declaration

public static int getDaysInMonth(final Date date) 

Method Source Code

//package com.java2s;
/*/*  w w w .  j  av a2  s .c  om*/
 * jGnash, a personal finance application
 * Copyright (C) 2001-2015 Craig Cavanaugh
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

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

public class Main {
    /**
     * ThreadLocal for a {@code GregorianCalendar}
     */
    private static final ThreadLocal<GregorianCalendar> gregorianCalendarThreadLocal = new ThreadLocal<GregorianCalendar>() {
        @Override
        protected GregorianCalendar initialValue() {
            return new GregorianCalendar();
        }
    };

    /**
     * Returns the number of days in the month given a date
     *
     * @param date date (Month)
     * @return the number of days in the month
     */
    public static int getDaysInMonth(final Date date) {
        final GregorianCalendar c = gregorianCalendarThreadLocal.get();

        c.setTime(date);
        c.set(c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.getActualMaximum(Calendar.DAY_OF_MONTH));

        return c.get(Calendar.DAY_OF_MONTH);
    }
}

Related

1. getCurMonthFirstDay()
2. getCurrentDayOfMonth()
3. getCurretnMonthFirstDay()
4. getCurrMonthFirstDay()
5. getDayOfMonth()
6. getDaysOfMonth(Date date)
7. getDaysOfMonth(Date date)
8. getFirstDate(String base_month)
9. getFirstDateOfCurMonth()