Java tutorial
//package com.java2s; /* * ____.____ __.____ ___ _____ * | | |/ _| | \ / _ \ ______ ______ * | | < | | / / /_\ \\____ \\____ \ * /\__| | | \| | / / | \ |_> > |_> > * \________|____|__ \______/ \____|__ / __/| __/ * \/ \/|__| |__| * * Copyright (c) 2014-2015 Paul "Marunjar" Pretsch * * This program 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. * * 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; import java.util.Date; public class Main { public static boolean isSameDay(Date date1, Date date2) { if (date1 == null || date2 == null) { throw new IllegalArgumentException("The date must not be null"); } Calendar cal1 = Calendar.getInstance(); cal1.setTime(date1); Calendar cal2 = Calendar.getInstance(); cal2.setTime(date2); return isSameDay(cal1, cal2); } public static boolean isSameDay(Calendar cal1, Calendar cal2) { if (cal1 == null || cal2 == null) { throw new IllegalArgumentException("The date must not be null"); } return (cal1.get(Calendar.ERA) == cal2.get(Calendar.ERA) && cal1.get(Calendar.YEAR) == cal2.get(Calendar.YEAR) && cal1.get(Calendar.DAY_OF_YEAR) == cal2.get(Calendar.DAY_OF_YEAR)); } }