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26 package java.lang.reflect;
29 * InvocationTargetException is a checked exception that wraps
30 * an exception thrown by an invoked method or constructor.
32 * <p>As of release 1.4, this exception has been retrofitted to conform to
33 * the general purpose exception-chaining mechanism. The "target exception"
34 * that is provided at construction time and accessed via the
35 * {@link #getTargetException()} method is now known as the <i>cause</i>,
36 * and may be accessed via the {@link Throwable#getCause()} method,
37 * as well as the aforementioned "legacy method."
42 public class InvocationTargetException extends ReflectiveOperationException {
44 * Use serialVersionUID from JDK 1.1.X for interoperability
46 private static final long serialVersionUID = 4085088731926701167L;
49 * This field holds the target if the
50 * InvocationTargetException(Throwable target) constructor was
51 * used to instantiate the object
56 private Throwable target;
59 * Constructs an {@code InvocationTargetException} with
60 * {@code null} as the target exception.
62 protected InvocationTargetException() {
63 super((Throwable)null); // Disallow initCause
67 * Constructs a InvocationTargetException with a target exception.
69 * @param target the target exception
71 public InvocationTargetException(Throwable target) {
72 super((Throwable)null); // Disallow initCause
77 * Constructs a InvocationTargetException with a target exception
78 * and a detail message.
80 * @param target the target exception
81 * @param s the detail message
83 public InvocationTargetException(Throwable target, String s) {
84 super(s, null); // Disallow initCause
89 * Get the thrown target exception.
91 * <p>This method predates the general-purpose exception chaining facility.
92 * The {@link Throwable#getCause()} method is now the preferred means of
93 * obtaining this information.
95 * @return the thrown target exception (cause of this exception).
97 public Throwable getTargetException() {
102 * Returns the cause of this exception (the thrown target exception,
103 * which may be {@code null}).
105 * @return the cause of this exception.
108 public Throwable getCause() {