001    /*
002      Copyright (C) 2001 Laurent Martelli
003    
004      This program is free software; you can redistribute it and/or modify
005      it under the terms of the GNU Lesser General Public License as
006      published by the Free Software Foundation; either version 2 of the
007      License, or (at your option) any later version.
008    
009      This program is distributed in the hope that it will be useful,
010      but WITHOUT ANY WARRANTY; without even the implied warranty of
011      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012      GNU Lesser General Public License for more details.
013    
014      You should have received a copy of the GNU Lesser General Public License
015      along with this program; if not, write to the Free Software
016      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
017    
018    package org.objectweb.jac.util;
019    
020    import java.lang.reflect.InvocationTargetException;
021    
022    
023    /**
024     * Various often used Exception functions
025     */
026    public class Exceptions
027    {
028       public static Throwable getTargetException(Throwable throwable) {
029          while (throwable instanceof WrappedThrowableException ||
030                 throwable instanceof InvocationTargetException) {
031             if (throwable instanceof WrappedThrowableException) {
032                throwable = ((WrappedThrowableException)throwable).getWrappedThrowable();
033             } else if (throwable instanceof InvocationTargetException) {
034                throwable = ((InvocationTargetException)throwable).getTargetException();
035             }
036          }
037          return throwable;
038       }
039    }