Here you can find the source of isSameDayOfYear(Calendar calendar1, Calendar calendar2)
public static boolean isSameDayOfYear(Calendar calendar1, Calendar calendar2)
//package com.java2s; /*//w ww . ja v a 2 s . co m * Copyright 2009 Yodlee, Inc. All Rights Reserved. Your use of this code * requires a license from Yodlee. Any such license to this code is * restricted to evaluation/illustrative purposes only. It is not intended * for use in a production environment, and Yodlee disclaims all warranties * and/or support obligations concerning this code, regardless of the terms * of any other agreements between Yodlee and you." */ import java.util.Calendar; public class Main { public static boolean isSameDayOfYear(Calendar calendar1, Calendar calendar2) { return (getYear(calendar1) == getYear(calendar2)) && (getDay(calendar1) == getDay(calendar2)); } public static int getYear(Calendar calendar) { return calendar.get(Calendar.YEAR); } public static int getDay(Calendar calendar) { return calendar.get(Calendar.DAY_OF_YEAR); } }