/**
* The MIT License
*
* Copyright (C) 2007 Asterios Raptis
*
* 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.
*/
package de.alpharogroup.date;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;
/**
* Utility class for the use of Date and Calendar object.
*
* @version 1.0
* @author Asterios Raptis
*/
public class ParseDateUtils implements DatePatterns
{
/**
* Tries to convert the given String to a Date.
*
* @param date
* The date to convert as String.
* @param patterns
* The date patterns to convert the String to a date-object.
* @return Gives a Date if the convertion was successfull otherwise false.
*/
public static Date parseDate(final String date, final List<String> patterns)
{
for (final String pattern : patterns)
{
final SimpleDateFormat formatter = new SimpleDateFormat(pattern);
try
{
final Date result = formatter.parse(date);
return result;
}
catch (final ParseException e)
{
// Do nothing...
}
}
return null;
}
/**
* Parses the String date to a date object. For example: USA-Format is : yyyy-MM-dd
*
* @param date
* The Date as String
* @param format
* The Format for the Date to parse
* @return The formated Date
* @throws ParseException
* occurs when their are problems with parsing the String to Date.
*/
public static Date parseToDate(final String date, final String format) throws ParseException
{
final DateFormat df = new SimpleDateFormat(format);
Date parsedDate = null;
parsedDate = df.parse(date);
return parsedDate;
}
/**
* Returns a date-object if the array with the formats are valid otherwise null.
*
* @param datum
* The date as string which to parse to a date-object.
* @param formats
* The string-array with the date-patterns.
* @param locale
* THe Locale for the SimpleDateFormat.
* @return A date-object if the array with the formats are valid otherwise null.
*/
public static Date parseToDate(final String datum, final String[] formats, final Locale locale)
{
for (final String format : formats)
{
final SimpleDateFormat sdf = new SimpleDateFormat(format, locale);
try
{
return sdf.parse(datum);
}
catch (final ParseException e)
{
// Do nothing...
}
}
return null;
}
/**
* Parses the String date to a date object. For example: USA-Format is : yyyy-MM-dd
*
* @param date
* The Date as String
* @param format
* The Format for the Date to parse
* @param lenient
* Specify whether or not date/time interpretation is to be lenient.
* @return The formated Date or null.
*/
public static Date parseToDateLenient(final String date, final String format,
final boolean lenient)
{
if (date == null || format == null || format.length() <= 0)
{
return null;
}
final DateFormat df = new SimpleDateFormat(format);
df.setLenient(lenient);
Date parsedDate = null;
try
{
parsedDate = df.parse(date);
}
catch (final ParseException e)
{
// ignore...
}
return parsedDate;
}
/**
* The Method parseToString(Date, String) formats the given Date to the given Format. For
* Example: Date date =new Date(System.currentTimeMillis()); String format =
* "dd.MM.yyyy HH:mm:ss"; String now = UtilDate.parseToString(date, format);
* System.out.println(now); The output would be something like this:'15.07.2005 14:12:00'
*
* @param date
* The Date to format to a String
* @param format
* The Format for the date
* @return The formated String
*/
public static String parseToString(final Date date, final String format)
{
return parseToString(date, format, Locale.getDefault(Locale.Category.FORMAT));
}
/**
* The Method parseToString(Date, String) formats the given Date to the given Format. For
* Example: Date date =new Date(System.currentTimeMillis()); String format =
* "dd.MM.yyyy HH:mm:ss"; String now = UtilDate.parseToString(date, format);
* System.out.println(now); The output would be something like this:'15.07.2005 14:12:00'
*
* @param date
* The Date to format to a String
* @param format
* The Format for the date
* @param locale
* The Locale object in which Language to get the format string.
* @return The formated String
*/
public static String parseToString(final Date date, final String format, final Locale locale)
{
final DateFormat df = new SimpleDateFormat(format, locale);
final String result = df.format(date);
return result;
}
/**
* The Method parseToString(String, String, String) formats the given Date as string from the
* current Format to the new given Format. For Example:<br>
* <br>
* <code> String expected = "20120810";<br>
* String actual = ParseDateUtils.parseToString(
* ParseDateUtils.parseToDate("10.08.2012", "dd.MM.yyyy"), "yyyyMMdd");
* </code><br>
* <br>
* The output is:20120810
*
* @param date
* The date as String object that shell be parsed to the new format
* @param currentformat
* The current format from the date
* @param newFormat
* The new format for the output date as String object
* @return The formated String in the new date format
* @throws ParseException
* occurs when their are problems with parsing the String to Date.
*/
public static String parseToString(final String date, final String currentformat,
final String newFormat) throws ParseException
{
final Date currentDate = parseToDate(date, currentformat);
final String result = parseToString(currentDate, newFormat);
return result;
}
/**
* Util-class. Do not make instances from this class.
*/
private ParseDateUtils()
{
}
}