Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2006-2008 The Kuali Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
 *
 * 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.
 */

import java.sql.Timestamp;
import java.util.Calendar;

public class Main {
    /**
     * @param startDateTime
     * @param endDateTime
     * @return the difference in hours between the second timestamp and first
     */
    public static double getDifferenceInHours(Timestamp startDateTime, Timestamp endDateTime) {
        int difference = 0;

        Calendar startCalendar = Calendar.getInstance();
        startCalendar.setTime(startDateTime);

        Calendar endCalendar = Calendar.getInstance();
        endCalendar.setTime(endDateTime);

        // First, get difference in whole days
        Calendar startCompare = Calendar.getInstance();
        startCompare.setTime(startDateTime);
        startCompare.set(Calendar.HOUR_OF_DAY, 0);
        startCompare.set(Calendar.MINUTE, 0);

        Calendar endCompare = Calendar.getInstance();
        endCompare.setTime(endDateTime);
        endCompare.set(Calendar.HOUR_OF_DAY, 0);
        endCompare.set(Calendar.MINUTE, 0);

        return (endCalendar.getTimeInMillis() - startCalendar.getTimeInMillis()) / (60.0000 * 60.0000 * 1000.0000);
    }
}