dateutils.java

是一个专门设计用于触摸屏的POS(point of sales)应用软件

//    Tina POS is a point of sales application designed for touch screens.
//    Copyright (C) 2005 Adrian Romero Corchado.
//    http://sourceforge.net/projects/tinapos
//
//    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 2 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, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

package net.adrianromero.beans;

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

public class DateUtils {
    
    /** Creates a new instance of DateUtils */
    private DateUtils() {
    }
    
    public static Date getToday() { 
        // el dia de hoy sin horas ni nada.        
        return getToday(new Date());     
    }
    
    public static Date getToday(Date d) { 
        // el dia de hoy sin horas ni nada.        
        GregorianCalendar ddate = new GregorianCalendar();
        ddate.setTime(d);    
        GregorianCalendar ddateday = new GregorianCalendar(ddate.get(GregorianCalendar.YEAR), ddate.get(GregorianCalendar.MONTH), ddate.get(GregorianCalendar.DAY_OF_MONTH));
        return ddateday.getTime();        
    }
    
    public static Date getTodayMinutes() { 
        // el dia de hoy sin horas ni nada.        
        return getTodayMinutes(new Date());     
    }
    
    public static Date getTodayMinutes(Date d) { 
        // el dia de hoy sin horas ni nada.        
        GregorianCalendar ddate = new GregorianCalendar();
        ddate.setTime(d);    
        GregorianCalendar ddateday = new GregorianCalendar(ddate.get(GregorianCalendar.YEAR), ddate.get(GregorianCalendar.MONTH), ddate.get(GregorianCalendar.DAY_OF_MONTH)
                                                         , ddate.get(GregorianCalendar.HOUR_OF_DAY), ddate.get(GregorianCalendar.MINUTE));
        return ddateday.getTime();        
    }
    
    public static Date getTodayHours(Date d) {
        // el dia ajustado a las horeas     
        Calendar ddate = Calendar.getInstance();
        ddate.setTime(d);    
        
        Calendar dNow = Calendar.getInstance();
        dNow.clear();
        dNow.set(ddate.get(Calendar.YEAR), ddate.get(Calendar.MONTH), ddate.get(Calendar.DAY_OF_MONTH)
               , ddate.get(Calendar.HOUR_OF_DAY), 0, 0);
        
        return dNow.getTime();        
    }
    
    public static Date getDate(Date day, Date hour) {
        
        // Calculamos el dia actual con la hora escogida.
        Calendar dDay = Calendar.getInstance();
        dDay.setTime(day);
        Calendar dHour = Calendar.getInstance();
        dHour.setTime(hour);    
        
        Calendar dNow = Calendar.getInstance();
        dNow.clear();
        dNow.set(dDay.get(Calendar.YEAR), dDay.get(Calendar.MONTH), dDay.get(Calendar.DAY_OF_MONTH)
        , dHour.get(Calendar.HOUR_OF_DAY), dHour.get(Calendar.MINUTE), dHour.get(Calendar.SECOND));
        
        return dNow.getTime();
    }
 
}