Here you can find the source of millisecondsToDays(long p_timeInMilliseconds, long p_secondsInDay)
private static int millisecondsToDays(long p_timeInMilliseconds, long p_secondsInDay)
//package com.java2s; /**//www . ja va 2 s . c o m * Copyright 2009 Welocalize, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * * You may obtain a copy of the License at * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ public class Main { private static final long MILLIS_PER_SECOND = 1000; private static int millisecondsToDays(long p_timeInMilliseconds, long p_secondsInDay) { int seconds = (new Long(p_timeInMilliseconds / MILLIS_PER_SECOND)).intValue(); int days = 0; // a remainder is found if (Math.IEEEremainder(seconds, p_secondsInDay) != 0) { days += 1; } if (seconds >= p_secondsInDay) { days += seconds / p_secondsInDay; } return days; } }