Here you can find the source of getQuarter(Date date)
public static int getQuarter(Date date)
//package com.java2s; /*//from w w w . j a va 2 s . 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; public class Main { public static int getQuarter(Date date) { // Calendar calendar = Calendar.getInstance(); // calendar.setTime(date); // int year = calendar.get(Calendar.YEAR); // int[] months = { 3, 6, 9, 12 }; // int count = 0; // do { // calendar.set(year, months[count++], 1); // Date tempDt = calendar.getTime(); // if (date.compareTo(tempDt) < 0) { // break; // } // } while (count < 4); // return count; Calendar cal = Calendar.getInstance(); cal.setTime(date); int month = cal.get(Calendar.MONTH); /* 0 through 11 */ int quarter = (month / 3) + 1; return quarter; } }