Source for java.lang.reflect.InvocationTargetException

   1: /* InvocationTargetException.java -- Wrapper exception for reflection
   2:    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2005  Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package java.lang.reflect;
  40: 
  41: /**
  42:  * InvocationTargetException is sort of a way to "wrap" whatever exception
  43:  * comes up when a method or constructor is called via Reflection. As of
  44:  * JDK 1.4, it was retrofitted to match the exception chaining of all other
  45:  * exceptions, but <code>getTargetException()</code> still works.
  46:  *
  47:  * @author John Keiser
  48:  * @author Tom Tromey (tromey@cygnus.com)
  49:  * @author Eric Blake (ebb9@email.byu.edu)
  50:  * @see Method#invoke(Object,Object[])
  51:  * @see Constructor#newInstance(Object[])
  52:  * @since 1.1
  53:  * @status updated to 1.4
  54:  */
  55: public class InvocationTargetException extends Exception
  56: {
  57:   /**
  58:    * Compatible with JDK 1.1+.
  59:    */
  60:   private static final long serialVersionUID = 4085088731926701167L;
  61: 
  62:   /**
  63:    * The chained exception. This field is only around for serial compatibility.
  64:    *
  65:    * @serial the chained exception
  66:    */
  67:   private final Throwable target;
  68: 
  69:   /**
  70:    * Construct an exception with null as the cause. The cause is initialized
  71:    * to null.
  72:    */
  73:   protected InvocationTargetException()
  74:   {
  75:     this(null, null);
  76:   }
  77: 
  78:   /**
  79:    * Create an <code>InvocationTargetException</code> using another
  80:    * exception.
  81:    *
  82:    * @param targetException the exception to wrap
  83:    */
  84:   public InvocationTargetException(Throwable targetException)
  85:   {
  86:     this(targetException, null);
  87:   }
  88: 
  89:   /**
  90:    * Create an <code>InvocationTargetException</code> using another
  91:    * exception and an error message.
  92:    *
  93:    * @param targetException the exception to wrap
  94:    * @param err an extra reason for the exception-throwing
  95:    */
  96:   public InvocationTargetException(Throwable targetException, String err)
  97:   {
  98:     super(err, targetException);
  99:     target = targetException;
 100:   }
 101: 
 102:   /**
 103:    * Get the wrapped (targeted) exception.
 104:    *
 105:    * @return the targeted exception
 106:    * @see #getCause()
 107:    */
 108:   public Throwable getTargetException()
 109:   {
 110:     return target;
 111:   }
 112: 
 113:   /**
 114:    * Returns the cause of this exception (which may be null).
 115:    *
 116:    * @return the cause
 117:    * @since 1.4
 118:    */
 119:   public Throwable getCause()
 120:   {
 121:     return target;
 122:   }
 123: }