Here you can find the source of getLastCompletedMonthAndYear()
public static Map<String, Object> getLastCompletedMonthAndYear()
//package com.java2s; /*//from w w w . j a v a 2 s . c o m This file is part of Cyclos (www.cyclos.org). A project of the Social Trade Organisation (www.socialtrade.org). Cyclos 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. Cyclos 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 Cyclos; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ import java.util.Calendar; import java.util.HashMap; import java.util.Map; public class Main { public static Map<String, Object> getLastCompletedMonthAndYear() { final Calendar now = Calendar.getInstance(); int month = now.get(Calendar.MONTH); int year = now.get(Calendar.YEAR); if (month == 0) { month = 12; year--; } else { month--; } final Map<String, Object> completedMonthAndYear = new HashMap<String, Object>(); completedMonthAndYear.put("month", month); completedMonthAndYear.put("year", year); return completedMonthAndYear; } }