Java Age Calculate getAge(final Date birthDay, final Date currDate)

Description

Returns the age in years according to the date of birth passed and the date passed as current.

License

Open Source License

Parameter

Parameter	Description
birthDay	Date of birth
currDate	Date where the age is to be calculated

Return

years old using current time

Declaration

public static int getAge(final Date birthDay, final Date currDate) 

Method Source Code

//package com.java2s;
/**//ww w.ja  v  a 2s  .c o m
 *
 * Licensed under the GNU General Public License (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.gnu.org/licenses/gpl.txt
 *
 * 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.
 *
 * 
 * @author Vadim Kisen
 *
 * copyright 2010 by uTest 
 */

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

public class Main {
    public static final int YEAR = Calendar.YEAR;
    public static final int HOUR = Calendar.HOUR;
    public static final int MINUTE = Calendar.MINUTE;
    public static final int SECOND = Calendar.SECOND;

    /**
     * Returns the age in years according to the date of birth passed and the
     * date passed as current.
     * 
     * @param birthDay
     *            Date of birth
     * @param currDate
     *            Date where the age is to be calculated
     * 
     * @return years old using current time
     */
    public static int getAge(final Date birthDay, final Date currDate) {
        final Calendar endDate = Calendar.getInstance();
        final Calendar startDate = Calendar.getInstance();
        startDate.setTime(birthDay);
        endDate.setTime(currDate);
        int years = endDate.get(Calendar.YEAR) - startDate.get(Calendar.YEAR);
        startDate.set(Calendar.YEAR, endDate.get(Calendar.YEAR));
        if (startDate.after(endDate)) {
            years--;
        }
        return years;
    }

    /**
     * Given a Date as parameter, it sets it to the specified time and returns a
     * copy.
     * 
     * @param date
     *            Original date
     * @param hours
     *            Hours to set to the date
     * @param minutes
     *            Minutes to set to the date
     * @param seconds
     *            Seconds to set to the date
     * 
     * @return A new Date with the given time.
     */
    public static Date setTime(final Date date, final int hours, final int minutes, final int seconds) {
        final Calendar aux = Calendar.getInstance();
        aux.setTime(date);
        aux.set(Calendar.MILLISECOND, 0);
        aux.set(Calendar.HOUR, hours);
        aux.set(Calendar.MINUTE, minutes);
        aux.set(Calendar.SECOND, seconds);
        return aux.getTime();
    }
}

Related

1. getAge(Date birthday)
2. getAge(Date date)
3. getAge(Date date, TimeZone tz)
4. getAge(Date dateNaissance)
5. getAge(Date time, Date birth)
6. getAge(String year)
7. getAge1(Date birthDay)
8. getAgeAt(final Date birthday, final Date date)
9. getAgeFromBirthDate(Date birth, boolean estimate)