/*
* JIntegerHelper.java
*
* Created on 10.09.2009, 10:53:22
*
* Copyright (C) 10.09.2009 reiner
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/**
*
* @author reiner
*/
package shared.number;
import java.text.NumberFormat;
import java.text.ParseException;
import java.util.Locale;
/**
* Parse a integer value from a string in decimal of hexadecimal format
*/
public final class JIntegerHelper
{
private JIntegerHelper()
{}
/**
* Parse an integer in decimal and hex when prefixed with '0x'
* @param str the string which will be parsed
* @return returns an integer
* @throws NumberFormatException if the string is not parsable
*/
public static int parseIntegerHex(String str) throws NumberFormatException
{
str = str.trim();
return (str.length() > 2 && str.substring(0, 2).equals("0x") ? Integer.parseInt(str.substring(2, str.length()), 16) : Integer.parseInt(str));
}
public static int parseInteger(String str, Locale locale) throws NumberFormatException
{
int val = 0;
try
{
val = parseIntegerHex(str);
}
catch(NumberFormatException ex)
{
try
{
NumberFormat numberFormat = NumberFormat.getInstance(locale);
val = numberFormat.parse(str).intValue();
}
catch(ParseException e)
{
throw new NumberFormatException(e.getMessage());
}
}
return val;
}
public static int parseInteger(String str) throws NumberFormatException
{
return parseInteger(str, Locale.getDefault());
}
}