/*
 * Copyright (c) 1996, 2004, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package java.lang.reflect;

/**
 * InvocationTargetException is a checked exception that wraps
 * an exception thrown by an invoked method or constructor.
 *
 * <p>As of release 1.4, this exception has been retrofitted to conform to
 * the general purpose exception-chaining mechanism. The "target exception"
 * that is provided at construction time and accessed via the
 * {@link #getTargetException()} method is now known as the <i>cause</i>,
 * and may be accessed via the {@link Throwable#getCause()} method,
 * as well as the aforementioned "legacy method."
 *
 * @see Method
 * @see Constructor
 */
public class InvocationTargetException extends ReflectiveOperationException {
 /**
 * Use serialVersionUID from JDK 1.1.X for interoperability
 */
 private static final long serialVersionUID = 4085088731926701167L;

 /**
 * This field holds the target if the
 * InvocationTargetException(Throwable target) constructor was
 * used to instantiate the object
 *
 * @serial
 *
 */
 private Throwable target;

 /**
 * Constructs an {@code InvocationTargetException} with
 * {@code null} as the target exception.
 */
 protected InvocationTargetException() {
 super((Throwable)null); // Disallow initCause
 }

 /**
 * Constructs a InvocationTargetException with a target exception.
 *
 * @param target the target exception
 */
 public InvocationTargetException(Throwable target) {
 super((Throwable)null); // Disallow initCause
 this.target = target;
 }

 /**
 * Constructs a InvocationTargetException with a target exception
 * and a detail message.
 *
 * @param target the target exception
 * @param s the detail message
 */
 public InvocationTargetException(Throwable target, String s) {
 super(s, null); // Disallow initCause
 this.target = target;
 }

 /**
 * Get the thrown target exception.
 *
 * <p>This method predates the general-purpose exception chaining facility.
 * The {@link Throwable#getCause()} method is now the preferred means of
 * obtaining this information.
 *
 * @return the thrown target exception (cause of this exception).
 */
 public Throwable getTargetException() {
 return target;
 }

 /**
 * Returns the cause of this exception (the thrown target exception,
 * which may be {@code null}).
 *
 * @return the cause of this exception.
 * @since 1.4
 */
 public Throwable getCause() {
 return target;
 }
}