Java Today sameTimeToday(Date time)

Description

same Time Today

License

Open Source License

Declaration

public static Date sameTimeToday(Date time) 

Method Source Code

//package com.java2s;
/*//www. ja  v a2  s.  com
 * #%L
 * Webstar Newsletter
 * %%
 * Copyright (C) 2013 Webstar Csoport Kft.
 * %%
 * 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/gpl-3.0.html>.
 * #L%
 */

import java.util.*;

public class Main {
    public static Date sameTimeToday(Date time) {
        if (time == null) {
            return null;
        }
        return makeFromDateAndTime(today(), time);
    }

    public static Date makeFromDateAndTime(final Date datum, final Date oraPerc) {
        Calendar cal = new GregorianCalendar();
        cal.setTime(oraPerc);
        int ora = cal.get(Calendar.HOUR_OF_DAY);
        int perc = cal.get(Calendar.MINUTE);
        return createDateAndTime(datum, ora, perc);
    }

    public static Date today() {
        return startOfDay(getCurrentDate());
    }

    public static Date createDateAndTime(final int ev, final int ho, final int nap, final int ora, final int perc) {
        return createDateAndTime(createDate(ev, ho, nap), ora, perc);
    }

    /**
     * datum adja a datumot, ora, perc-bol jon az ora:perc
     */
    public static Date createDateAndTime(final Date datum, final int ora, final int perc) {
        if (!isValidHour(ora) || !isValidMinute(perc)) {
            return null;
        }
        Calendar cal = new GregorianCalendar();
        cal.setTime(datum);
        cal.set(Calendar.HOUR_OF_DAY, ora);
        cal.set(Calendar.MINUTE, perc);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);
        return cal.getTime();
    }

    public static Date createDateAndTime(final Date datum, final int ora, final int perc, final int sec) {
        if (!isValidHour(ora) || !isValidMinute(perc) || !isValidSec(sec)) {
            return null;
        }
        Calendar cal = new GregorianCalendar();
        cal.setTime(datum);
        cal.set(Calendar.HOUR_OF_DAY, ora);
        cal.set(Calendar.MINUTE, perc);
        cal.set(Calendar.SECOND, sec);
        cal.set(Calendar.MILLISECOND, 0);
        return cal.getTime();
    }

    public static Date startOfDay(Date datum) {
        if (datum == null) {
            return null;
        }
        Calendar cal = new GregorianCalendar();
        cal.setTime(datum);
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 0);

        return cal.getTime();
    }

    public static Date getCurrentDate() {
        return new Date();
    }

    public static Date createDate(int year, int month, int day) {
        Calendar c = new GregorianCalendar();
        c.set(Calendar.YEAR, year);
        c.set(Calendar.MONTH, month - 1);
        c.set(Calendar.DAY_OF_MONTH, day);
        return startOfDay(c.getTime());
    }

    public static boolean isValidHour(final int hour) {
        return hour >= 0 && hour < 24;
    }

    public static boolean isValidMinute(final int min) {
        return min >= 0 && min < 60;
    }

    public static boolean isValidSec(final int sec) {
        return sec >= 0 && sec < 60;
    }
}

Related

1. isToday(String depDateTime)
2. isToday(String sdate)
3. isToday(String sdate)
4. parseToday(String s)
5. plusDaysToday(int days)
6. startOfToday()
7. today()
8. today()
9. today()