Here you can find the source of isBirthday(Calendar cal)
public static boolean isBirthday(Calendar cal)
//package com.java2s; /*//w ww . j av a 2 s.com * This file is part of SWADroid. * * Copyright (C) 2010 Juan Miguel Boyero Corral <juanmi1982@gmail.com> * * SWADroid 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. * * SWADroid 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 SWADroid. If not, see <http://www.gnu.org/licenses/>. */ import java.util.Calendar; public class Main { public static boolean isBirthday(Calendar cal) { Calendar sysdate = Calendar.getInstance(); return ((cal != null) && (sysdate.get(Calendar.DAY_OF_MONTH) == cal .get(Calendar.DAY_OF_MONTH)) && (sysdate .get(Calendar.MONTH) == cal.get(Calendar.MONTH))); } }