001    package org.apache.fulcrum.yaafi.framework.util;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one
005     * or more contributor license agreements.  See the NOTICE file
006     * distributed with this work for additional information
007     * regarding copyright ownership.  The ASF licenses this file
008     * to you under the Apache License, Version 2.0 (the
009     * "License"); you may not use this file except in compliance
010     * with the License.  You may obtain a copy of the License at
011     *
012     *   http://www.apache.org/licenses/LICENSE-2.0
013     *
014     * Unless required by applicable law or agreed to in writing,
015     * software distributed under the License is distributed on an
016     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017     * KIND, either express or implied.  See the License for the
018     * specific language governing permissions and limitations
019     * under the License.
020     */
021    
022    import java.io.PrintWriter;
023    import java.io.StringWriter;
024    
025    /**
026     * A subset of the utilities available in commons-lang-2.1 ExceptionUtils.
027     *
028     * @author <a href="mailto:siegfried.goeschl@it20one.at">Siegfried Goeschl</a>
029     */
030    public class ExceptionUtils
031    {
032    
033        /**
034         * <p>Public constructor allows an instance of <code>ExceptionUtils</code>
035         * to be created, although that is not normally necessary.</p>
036         */
037        public ExceptionUtils()
038        {
039            // nothing to do
040        }
041    
042        /**
043         * <p>Gets the stack trace from a Throwable as a String.</p>
044         *
045         * @param throwable  the <code>Throwable</code> to be examined
046         * @return the stack trace as generated by the exception's
047         *  <code>printStackTrace(PrintWriter)</code> method
048         */
049        public static String getStackTrace(Throwable throwable)
050        {
051            StringWriter sw = new StringWriter();
052            PrintWriter pw = new PrintWriter( sw, true );
053            throwable.printStackTrace( pw );
054            return sw.getBuffer().toString();
055        }
056    }