Java tutorial
/* ############################################################################### # # # Copyright (C) 2011-2012 OpenMEAP, Inc. # # Credits to Jonathan Schang & Robert Thacher # # # # Released under the LGPLv3 # # # # OpenMEAP is free software: you can redistribute it and/or modify # # it under the terms of the GNU Lesser General Public License as published # # by the Free Software Foundation, either version 3 of the License, or # # (at your option) any later version. # # # # OpenMEAP 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 Lesser General Public License for more details. # # # # You should have received a copy of the GNU Lesser General Public License # # along with OpenMEAP. If not, see <http://www.gnu.org/licenses/>. # # # ############################################################################### */ package com.openmeap.util; import java.util.ArrayList; import java.util.Collection; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.apache.commons.lang.exception.ExceptionUtils; public class ThrowableList extends ArrayList<Throwable> { private static String SEPARATOR = ", "; private Logger logger = LoggerFactory.getLogger(ThrowableList.class); public ThrowableList() { } public ThrowableList(int arg0) { super(arg0); } public ThrowableList(Collection arg0) { super(arg0); } public ThrowableList(Logger logger) { this.logger = logger; } public void log() { logger.error(this.toString()); } @Override public String toString() { StringBuilder result = new StringBuilder(); Integer i = 0; for (Throwable t : this) { // get root cause Exception rootCause = (Exception) ExceptionUtils.getRootCause(t); String stackTrace = ExceptionUtils.getStackTrace(rootCause); result.append("+= Throwable " + i + " ==================\n"); result.append(rootCause.getMessage()); result.append("\n"); result.append(stackTrace); result.append("\n"); i++; } return result.toString(); } public String getMessages() { StringBuilder result = new StringBuilder(); Integer i = 0; for (Throwable t : this) { // get root cause Exception rootCause = (Exception) ExceptionUtils.getRootCause(t); String stackTrace = ExceptionUtils.getStackTrace(rootCause); if (i != 0) { result.append(SEPARATOR); } result.append("\"" + rootCause.getMessage() + "\""); i++; } return result.toString(); } }