Source Home >> Java Source 1.6.0 >> java.lang.reflect.InvocationTargetException V 0.09

01/*
02 * @(#)InvocationTargetException.java	1.20 05/11/17
03 *
04 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
05 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
06 */
07
08package java.lang.reflect;
09
10/**
11 * InvocationTargetException is a checked exception that wraps
12 * an exception thrown by an invoked method or constructor.
13 *
14 * <p>As of release 1.4, this exception has been retrofitted to conform to
15 * the general purpose exception-chaining mechanism.  The "target exception"
16 * that is provided at construction time and accessed via the
17 * {@link #getTargetException()} method is now known as the <i>cause</i>,
18 * and may be accessed via the {@link Throwable#getCause()} method,
19 * as well as the aforementioned "legacy method."
20 *
21 * @see Method
22 * @see Constructor
23 */
24public class InvocationTargetException extends Exception {
25    /**
26     * Use serialVersionUID from JDK 1.1.X for interoperability
27     */
28    private static final long serialVersionUID = 4085088731926701167L;
29
30     /**
31     * This field holds the target if the 
32     * InvocationTargetException(Throwable target) constructor was
33     * used to instantiate the object
34     * 
35     * @serial 
36     * 
37     */
38    private Throwable target;
39
40    /**
41     * Constructs an <code>InvocationTargetException</code> with 
42     * <code>null</code> as the target exception.
43     */
44    protected InvocationTargetException() {
45	super((Throwable)null);  // Disallow initCause
46    }
47
48    /**
49     * Constructs a InvocationTargetException with a target exception.
50     * 
51     * @param target the target exception
52     */
53    public InvocationTargetException(Throwable target) {
54	super((Throwable)null);  // Disallow initCause
55        this.target = target;
56    }
57
58    /**
59     * Constructs a InvocationTargetException with a target exception
60     * and a detail message.
61     *
62     * @param target the target exception
63     * @param s      the detail message
64     */
65    public InvocationTargetException(Throwable target, String s) {
66	super(s, null);  // Disallow initCause
67        this.target = target;
68    }
69
70    /**
71     * Get the thrown target exception.
72     *
73     * <p>This method predates the general-purpose exception chaining facility.
74     * The {@link Throwable#getCause()} method is now the preferred means of
75     * obtaining this information.
76     *
77     * @return the thrown target exception (cause of this exception).
78     */
79    public Throwable getTargetException() {
80	return target;
81    }
82
83    /**
84     * Returns the cause of this exception (the thrown target exception,
85     * which may be <tt>null</tt>).
86     *
87     * @return  the cause of this exception.
88     * @since   1.4
89     */
90    public Throwable getCause() {
91        return target;
92    }
93}