Java Hour Format hoursBetween(String from, String to, String format)

Description

hours Between

License

Apache License

Declaration

public static int hoursBetween(String from, String to, String format) throws IOException 

Method Source Code

//package com.java2s;
/**/*from w  ww. j ava  2 s  . c o m*/
 * Copyright 2014 tgrape 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.
 */

import java.io.IOException;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

public class Main {
    public static int hoursBetween(String from, String to, String format) throws IOException {

        SimpleDateFormat formatter = new SimpleDateFormat(format, Locale.UK);

        Calendar calendar = Calendar.getInstance(Locale.UK);
        calendar.setFirstDayOfWeek(Calendar.MONDAY);
        calendar.setMinimalDaysInFirstWeek(4);

        Date date1 = null;
        Date date2 = null;
        try {
            date1 = formatter.parse(from);
            date2 = formatter.parse(to);
        } catch (ParseException e) {
            throw new IOException(e.getMessage());
        }

        long duration = date2.getTime() - date1.getTime();

        return (int) (duration / (1000 * 60 * 60));
    }
}

Related

1. getHHmmSS()
2. getHourFormat(String string)
3. getHourMinuteFormatter()
4. getHoursNumberFormat()
5. getOnehouragoFormatString(String format)
6. hoursFrom(Date date, int amount, String format)