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
005This file is part of GNU Classpath.
006
007GNU Classpath is free software; you can redistribute it and/or modify
008it under the terms of the GNU General Public License as published by
009the Free Software Foundation; either version 2, or (at your option)
010any later version.
011
012GNU Classpath is distributed in the hope that it will be useful, but
013WITHOUT ANY WARRANTY; without even the implied warranty of
014MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
015General Public License for more details.
016
017You should have received a copy of the GNU General Public License
018along with GNU Classpath; see the file COPYING.  If not, write to the
019Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02002110-1301 USA.
021
022Linking this library statically or dynamically with other modules is
023making a combined work based on this library.  Thus, the terms and
024conditions of the GNU General Public License cover the whole
025combination.
026
027As a special exception, the copyright holders of this library give you
028permission to link this library with independent modules to produce an
029executable, regardless of the license terms of these independent
030modules, and to copy and distribute the resulting executable under
031terms of your choice, provided that you also meet, for each linked
032independent module, the terms and conditions of the license of that
033module.  An independent module is a module which is not derived from
034or based on this library.  If you modify this library, you may extend
035this exception to your version of the library, but you are not
036obligated to do so.  If you do not wish to do so, delete this
037exception statement from your version. */
038
039
040package 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 */
056public 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}