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/*
 * Copyright (c) 2011-2014 Fernando Petrola
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/* Copyright 1998, 2004 The Apache Software Foundation or its licensors, as applicable
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package java.lang.reflect;

/**
 * This class provides a wrapper for an exception thrown by a Method or
 * Constructor invocation.
 *
 * @see java.lang.reflect.Method#invoke
 * @see java.lang.reflect.Constructor#newInstance
 */
public class InvocationTargetException extends Exception
{

	private static final long serialVersionUID= 4085088731926701167L;

	private Throwable target;

	/**
	 * Constructs a new instance of this class with its walkback filled in.
	 */
	protected InvocationTargetException()
	{
		super((Throwable) null);
	}

	/**
	 * Constructs a new instance of this class with its walkback and target
	 * exception filled in.
	 *
	 * @param exception
	 *            Throwable The exception which occurred while running the
	 *            Method or Constructor.
	 */
	public InvocationTargetException(Throwable exception)
	{
		super(null, exception);
		target= exception;
	}

	/**
	 * Constructs a new instance of this class with its walkback, target
	 * exception and message filled in.
	 *
	 * @param detailMessage
	 *            String The detail message for the exception.
	 * @param exception
	 *            Throwable The exception which occurred while running the
	 *            Method or Constructor.
	 */
	public InvocationTargetException(Throwable exception, String detailMessage)
	{
		super(detailMessage, exception);
		target= exception;
	}

	/**
	 * Answers the exception which caused the receiver to be thrown.
	 */
	public Throwable getTargetException()
	{
		return target;
	}

	/**
	 * Answers the cause of this Throwable, or null if there is no cause.
	 *
	 * @return Throwable The receiver's cause.
	 */
	public Throwable getCause()
	{
		return target;
	}
}