001    /* ExceptionInInitializerError.java -- thrown when class initialization fails
002       with an uncaught exception
003       Copyright (C) 1998, 1999, 2000, 2001, 2002, 2005  Free Software Foundation, Inc.
004    
005    This file is part of GNU Classpath.
006    
007    GNU Classpath is free software; you can redistribute it and/or modify
008    it under the terms of the GNU General Public License as published by
009    the Free Software Foundation; either version 2, or (at your option)
010    any later version.
011    
012    GNU Classpath is distributed in the hope that it will be useful, but
013    WITHOUT ANY WARRANTY; without even the implied warranty of
014    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
015    General Public License for more details.
016    
017    You should have received a copy of the GNU General Public License
018    along with GNU Classpath; see the file COPYING.  If not, write to the
019    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
020    02110-1301 USA.
021    
022    Linking this library statically or dynamically with other modules is
023    making a combined work based on this library.  Thus, the terms and
024    conditions of the GNU General Public License cover the whole
025    combination.
026    
027    As a special exception, the copyright holders of this library give you
028    permission to link this library with independent modules to produce an
029    executable, regardless of the license terms of these independent
030    modules, and to copy and distribute the resulting executable under
031    terms of your choice, provided that you also meet, for each linked
032    independent module, the terms and conditions of the license of that
033    module.  An independent module is a module which is not derived from
034    or based on this library.  If you modify this library, you may extend
035    this exception to your version of the library, but you are not
036    obligated to do so.  If you do not wish to do so, delete this
037    exception statement from your version. */
038    
039    
040    package java.lang;
041    
042    /**
043     * An <code>ExceptionInInitializerError</code> is thrown when an uncaught
044     * exception has occurred in a static initializer or the initializer for a
045     * static variable. In general, this wraps only RuntimeExceptions, since the
046     * compiler does not allow a checked exception to be uncaught in an
047     * initializer. This exception only occurs during reflection, when a class
048     * is initialized as part of another action.
049     *
050     * @author Brian Jones
051     * @author Tom Tromey (tromey@cygnus.com)
052     * @author Eric Blake (ebb9@email.byu.edu)
053     * @since 1.1
054     * @status updated to 1.4
055     */
056    public class ExceptionInInitializerError extends LinkageError
057    {
058      /**
059       * Compatible with JDK 1.1+.
060       */
061      static final long serialVersionUID = 1521711792217232256L;
062    
063      /**
064       * The cause of this exception (duplicates the one stored in Throwable).
065       *
066       * @serial the exception cause
067       */
068      private final Throwable exception;
069    
070      /**
071       * Create an error without a message. The cause is initialized as null.
072       */
073      public ExceptionInInitializerError()
074      {
075        this((String) null);
076      }
077    
078      /**
079       * Create an error with a message. The cause is initialized as null.
080       *
081       * @param s the message
082       */
083      public ExceptionInInitializerError(String s)
084      {
085        super(s);
086        exception = null;
087      }
088    
089      /**
090       * Creates an error an saves a reference to the <code>Throwable</code>
091       * object. The message string is null.
092       *
093       * @param t the exception thrown
094       */
095      public ExceptionInInitializerError(Throwable t)
096      {
097        super(null);
098        initCause(t);
099        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    }