Here you can find the source of isToday(long dateUtc)
public static boolean isToday(long dateUtc)
//package com.java2s; /* The MIT License (MIT) * * Copyright (c) 2013 Romain Segismont//from w ww . jav a2s .c o m * * Permission is hereby granted, free of charge, to any person obtaining a copy of * this software and associated documentation files (the "Software"), to deal in * the Software without restriction, including without limitation the rights to * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of * the Software, and to permit persons to whom the Software is furnished to do so, * subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */ import java.util.Calendar; public class Main { public static boolean isToday(long dateUtc) { final long currentTime = System.currentTimeMillis(); final Calendar calendarBefore = Calendar.getInstance(); calendarBefore.setTimeInMillis(currentTime); calendarBefore.set(Calendar.HOUR_OF_DAY, 0); calendarBefore.set(Calendar.MINUTE, 0); calendarBefore.set(Calendar.SECOND, 0); calendarBefore.set(Calendar.MILLISECOND, 0); // final Calendar calendarAfter = Calendar.getInstance(); calendarAfter.setTimeInMillis(currentTime); calendarAfter.set(Calendar.HOUR_OF_DAY, 23); calendarAfter.set(Calendar.MINUTE, 59); calendarAfter.set(Calendar.SECOND, 59); calendarAfter.set(Calendar.MILLISECOND, 250); if ((dateUtc >= calendarBefore.getTimeInMillis()) && (dateUtc <= calendarAfter.getTimeInMillis())) { return true; } return false; } }