Here you can find the source of isWeekEnd(int year, int month, int day)
public static boolean isWeekEnd(int year, int month, int day)
//package com.java2s; /*// www.j a va2 s.c o m * Copyright (C) 2007-2010 Castafiore * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Affero 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; public class Main { public static boolean isWeekEnd(int year, int month, int day) { int dayOfWeek = getDayOfWeek(year, month, day); if (Calendar.SATURDAY == dayOfWeek || Calendar.SUNDAY == dayOfWeek) { return true; } else { return false; } } public static int getDayOfWeek(int year, int month, int day) { Calendar cal = Calendar.getInstance(); cal.set(year, month, day); return (cal.get(Calendar.DAY_OF_WEEK)); } }