Source Code Cross Referenced for PrivilegedActionException.java in  » 6.0-JDK-Modules » j2me » java » security » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » java.security 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * @(#)PrivilegedActionException.java	1.15 06/10/10
003:         *
004:         * Copyright  1990-2006 Sun Microsystems, Inc. All Rights Reserved.  
005:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER  
006:         *   
007:         * This program is free software; you can redistribute it and/or  
008:         * modify it under the terms of the GNU General Public License version  
009:         * 2 only, as published by the Free Software Foundation.   
010:         *   
011:         * This program is distributed in the hope that it will be useful, but  
012:         * WITHOUT ANY WARRANTY; without even the implied warranty of  
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU  
014:         * General Public License version 2 for more details (a copy is  
015:         * included at /legal/license.txt).   
016:         *   
017:         * You should have received a copy of the GNU General Public License  
018:         * version 2 along with this work; if not, write to the Free Software  
019:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  
020:         * 02110-1301 USA   
021:         *   
022:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa  
023:         * Clara, CA 95054 or visit www.sun.com if you need additional  
024:         * information or have any questions. 
025:         *
026:         */
027:
028:        package java.security;
029:
030:        /**
031:         * This exception is thrown by
032:         * <code>doPrivileged(PrivilegedExceptionAction)</code> and
033:         * <code>doPrivileged(PrivilegedExceptionAction,
034:         * AccessControlContext context)</code> to indicate
035:         * that the action being performed threw a checked exception.  The exception
036:         * thrown by the action can be obtained by calling the
037:         * <code>getException</code> method.  In effect, an
038:         * <code>PrivilegedActionException</code> is a "wrapper"
039:         * for an exception thrown by a privileged action.
040:         *
041:         * <p>As of release 1.4, this exception has been retrofitted to conform to
042:         * the general purpose exception-chaining mechanism.  The "exception thrown
043:         * by the privileged computation" that is provided at construction time and
044:         * accessed via the {@link #getException()} method is now known as the
045:         * <i>cause</i>, and may be accessed via the {@link Throwable#getCause()}
046:         * method, as well as the aforementioned "legacy method."
047:         *
048:         * @see PrivilegedExceptionAction
049:         * @see AccessController#doPrivileged(PrivilegedExceptionAction)
050:         * @see AccessController#doPrivileged(PrivilegedExceptionAction,AccessControlContext)
051:         */
052:        public class PrivilegedActionException extends Exception {
053:            // use serialVersionUID from JDK 1.2.2 for interoperability
054:            private static final long serialVersionUID = 4724086851538908602L;
055:
056:            /**
057:             * @serial
058:             */
059:            private Exception exception;
060:
061:            /**
062:             * Constructs a new PrivilegedActionException &quot;wrapping&quot;
063:             * the specific Exception.
064:             *
065:             * @param exception The exception thrown
066:             */
067:            public PrivilegedActionException(Exception exception) {
068:                super ((Throwable) null); // Disallow initCause
069:                this .exception = exception;
070:            }
071:
072:            /**
073:             * Returns the exception thrown by the privileged computation that
074:             * resulted in this <code>PrivilegedActionException</code>.
075:             *
076:             * <p>This method predates the general-purpose exception chaining facility.
077:             * The {@link Throwable#getCause()} method is now the preferred means of
078:             * obtaining this information.
079:             *
080:             * @return the exception thrown by the privileged computation that
081:             *         resulted in this <code>PrivilegedActionException</code>.
082:             * @see PrivilegedExceptionAction
083:             * @see AccessController#doPrivileged(PrivilegedExceptionAction)
084:             * @see AccessController#doPrivileged(PrivilegedExceptionAction,
085:             *                                            AccessControlContext)
086:             */
087:            public Exception getException() {
088:                return exception;
089:            }
090:
091:            /**
092:             * Returns the the cause of this exception (the exception thrown by
093:             * the privileged computation that resulted in this
094:             * <code>PrivilegedActionException</code>).
095:             *
096:             * @return  the cause of this exception.
097:             * @since   1.4
098:             */
099:            public Throwable getCause() {
100:                return exception;
101:            }
102:
103:            public String toString() {
104:                String s = getClass().getName();
105:                return (exception != null) ? (s + ": " + exception.toString())
106:                        : s;
107:            }
108:        }
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