libjava/java/lang/ExceptionInInitializerError.java

   1 /* ExceptionInInitializerError.java -- thrown when class initialization fails
   2    with an uncaught exception
   3    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2005  Free Software Foundation, Inc.
   4
   5 This file is part of GNU Classpath.
   6
   7 GNU Classpath is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU Classpath is distributed in the hope that it will be useful, but
  13 WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Classpath; see the file COPYING.  If not, write to the
  19 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  20 02111-1307 USA.
  21
  22 Linking this library statically or dynamically with other modules is
  23 making a combined work based on this library.  Thus, the terms and
  24 conditions of the GNU General Public License cover the whole
  25 combination.
  26
  27 As a special exception, the copyright holders of this library give you
  28 permission to link this library with independent modules to produce an
  29 executable, regardless of the license terms of these independent
  30 modules, and to copy and distribute the resulting executable under
  31 terms of your choice, provided that you also meet, for each linked
  32 independent module, the terms and conditions of the license of that
  33 module.  An independent module is a module which is not derived from
  34 or based on this library.  If you modify this library, you may extend
  35 this exception to your version of the library, but you are not
  36 obligated to do so.  If you do not wish to do so, delete this
  37 exception statement from your version. */
  38
  39
  40 package java.lang;
  41
  42 /**
  43  * An <code>ExceptionInInitializerError</code> is thrown when an uncaught
  44  * exception has occurred in a static initializer or the initializer for a
  45  * static variable. In general, this wraps only RuntimeExceptions, since the
  46  * compiler does not allow a checked exception to be uncaught in an
  47  * initializer. This exception only occurs during reflection, when a class
  48  * is initialized as part of another action.
  49  *
  50  * @author Brian Jones
  51  * @author Tom Tromey (tromey@cygnus.com)
  52  * @author Eric Blake (ebb9@email.byu.edu)
  53  * @since 1.1
  54  * @status updated to 1.4
  55  */
  56 public class ExceptionInInitializerError extends LinkageError
  57 {
  58   /**
  59    * Compatible with JDK 1.1+.
  60    */
  61   static final long serialVersionUID = 1521711792217232256L;
  62
  63   /**
  64    * The cause of this exception (duplicates the one stored in Throwable).
  65    *
  66    * @serial the exception cause
  67    */
  68   private final Throwable exception;
  69
  70   /**
  71    * Create an error without a message. The cause is initialized as null.
  72    */
  73   public ExceptionInInitializerError()
  74   {
  75     this((String) null);
  76   }
  77
  78   /**
  79    * Create an error with a message. The cause is initialized as null.
  80    *
  81    * @param s the message
  82    */
  83   public ExceptionInInitializerError(String s)
  84   {
  85     super(s);
  86     exception = null;
  87   }
  88
  89   /**
  90    * Creates an error an saves a reference to the <code>Throwable</code>
  91    * object. The message string is null.
  92    *
  93    * @param t the exception thrown
  94    */
  95   public ExceptionInInitializerError(Throwable t)
  96   {
  97     super(null);
  98     initCause(t);
  99     exception = t;
 100   }
 101
 102   /**
 103    * Return the exception that caused this error to be created. This is a
 104    * legacy method; the preferred choice now is {@link Throwable#getCause()}.
 105    *
 106    * @return the cause, or null if unknown
 107    */
 108   public Throwable getException()
 109   {
 110     return exception;
 111   }
 112
 113   /**
 114    * Return the exception that cause this error to be created.
 115    *
 116    * @return the cause, or null if unknown
 117    * @since 1.4
 118    */
 119   public Throwable getCause()
 120   {
 121     return exception;
 122   }
 123 }