Here you can find the source of isWorkDay(Date data)
public static boolean isWorkDay(Date data)
//package com.java2s; /*/*from w w w . j a v a 2s.c o m*/ Copyright (c) 2012,2013 Mirco Attocchi This file is part of WebAppCommon. WebAppCommon 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. WebAppCommon 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with WebAppCommon. If not, see <http://www.gnu.org/licenses/>. */ import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; public class Main { public static boolean isWorkDay(Date data) { int theDay = getCalendar(data).get(Calendar.DAY_OF_WEEK); return theDay != Calendar.SUNDAY && theDay != Calendar.SATURDAY; } public static Calendar getCalendar(Date dt) { Calendar cal = new GregorianCalendar(); cal.setTime(dt); return cal; } /** * Set time of a Date * * @param aDate * @param hours * @param minutes * @return */ public static Date setTime(Date aDate, int hours, int minutes) { Calendar c = Calendar.getInstance(); c.setTime(aDate); c.set(Calendar.HOUR_OF_DAY, hours); c.set(Calendar.MINUTE, minutes); c.set(Calendar.SECOND, 0); c.set(Calendar.MILLISECOND, 0); return c.getTime(); } }