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 }