001/* 002 * GWTEventService 003 * Copyright (c) 2011 and beyond, strawbill UG (haftungsbeschr?nkt) 004 * 005 * This is free software; you can redistribute it and/or modify it 006 * under the terms of the GNU Lesser General Public License as 007 * published by the Free Software Foundation; either version 3 of 008 * the License, or (at your option) any later version. 009 * Other licensing for GWTEventService may also be possible on request. 010 * Please view the license.txt of the project for more information. 011 * 012 * This software is distributed in the hope that it will be useful, 013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 015 * Lesser General Public License for more details. 016 * 017 * You should have received a copy of the GNU Lesser General Public 018 * License along with this software; if not, write to the Free 019 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 020 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 021 */ 022package de.novanic.eventservice.util; 023 024import java.util.Scanner; 025 026/** 027 * Utility class to provide String and parsing operations. 028 * 029 * @author sstrohschein 030 * <br>Date: 05.03.2009 031 * <br>Time: 23:54:01 032 */ 033public final class StringUtil 034{ 035 private StringUtil() {} 036 037 /** 038 * Returns the integer of the value and throws a {@link de.novanic.eventservice.util.ServiceUtilException} when it isn't numeric (integer). 039 * @param aValue value to parse 040 * @return parsed integer 041 * @throws ServiceUtilException thrown when the value isn't numeric 042 */ 043 public static Integer readInteger(String aValue) throws ServiceUtilException { 044 if(aValue != null) { 045 Scanner theScanner = new Scanner(aValue.trim()); 046 if(theScanner.hasNextInt()) { 047 return theScanner.nextInt(); 048 } else { 049 throw new ServiceUtilException("The value \"" + aValue + "\" couldn't parsed to an integer!"); 050 } 051 } 052 return null; 053 } 054}