Java tutorial
/** * Copyright (C) 2014 BigLoupe http://bigloupe.github.io/SoS-JobScheduler/ * * 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 */ /********************************************************* begin of preamble ** ** Copyright (C) 2003-2012 Software- und Organisations-Service GmbH. ** All rights reserved. ** ** This file may be used under the terms of either the ** ** GNU General Public License version 2.0 (GPL) ** ** as published by the Free Software Foundation ** http://www.gnu.org/licenses/gpl-2.0.txt and appearing in the file ** LICENSE.GPL included in the packaging of this file. ** ** or the ** ** Agreement for Purchase and Licensing ** ** as offered by Software- und Organisations-Service GmbH ** in the respective terms of supply that ship with this file. ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS ** IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, ** THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR ** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS ** BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR ** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF ** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS ** INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN ** CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ** ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE ** POSSIBILITY OF SUCH DAMAGE. ********************************************************** end of preamble*/ package sos.util; import java.lang.Throwable; import java.sql.SQLException; /** * SOSExceptionHandler.java * * Diese Klasse fat eine Fehlermeldung/Exception in String um. * Bercksichtigt werden insbesondere die Verschachtelte Exceptions, wie * z.B. org.apache.commons.dbcp.SQLNestedException. Die org.apache.commons.dbcp.SQLNestedException * werden iteriert und zu einem String zusammengefat. * * @author Mrvet ksz * * @version 1.0 * */ public class SOSExceptionMessage extends Throwable { /** * * * @param exception * @return */ public static String getExceptionMessage(Exception exception) { String msg = ""; try { if (exception instanceof SQLException) { //|| exception instanceof javax.mail.MessagingException) { SQLException sqlExcep = (SQLException) exception; while (sqlExcep != null) { if (sqlExcep.equals(sqlExcep.getNextException())) { break; } msg = sqlExcep.toString(); if (sqlExcep.getCause() != null) { msg = msg + "\n" + sqlExcep.getCause(); } sqlExcep = sqlExcep.getNextException(); } } else { msg = exception.toString(); if (exception.getCause() != null) { msg = exception.toString() + " " + exception.getCause(); } } } catch (Exception e) { System.out.print(e); } return msg; } /** * Testprogramm * * Zum Testen der Klasse SOSExceptionMessage werden * Fehlermeldungen generiert. * * test = 0 -> NullPointerException * test = 1 -> division by 0 * * @param args */ public static void main(String[] args) { String s = null; int i = 0; int test = 0; try { if (test == 0) { boolean w = s.equals("a"); } else if (test == 1) { i = 1 / 0; } } catch (Exception e) { String a = getExceptionMessage(e); System.out.print("..error: " + a); } } }