/* 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;


/**
 * This error is thrown when an exception occurs during class initialization.
 */
public class ExceptionInInitializerError extends LinkageError {

	private static final long serialVersionUID = 1521711792217232256L;

	private Throwable exception;

	/**
	 * Constructs a new instance of this class with its walkback filled in.
	 */
	public ExceptionInInitializerError() {
		super();
		initCause(null);
	}

	/**
	 * Constructs a new instance of this class with its walkback and message
	 * filled in.
	 * 
	 * @param detailMessage
	 *            String The detail message for the exception.
	 */
	public ExceptionInInitializerError(String detailMessage) {
		super(detailMessage);
		initCause(null);
	}

	/**
	 * Constructs a new instance of this class with its walkback and exception
	 * filled in. The exception should be the one which originally occured in
	 * the class initialization code.
	 * 
	 * @param exception
	 *            Throwable The exception which caused the problem.
	 */
	public ExceptionInInitializerError(Throwable exception) {
		super();
		this.exception = exception;
		initCause(exception);
	}

	/**
	 * Answers the exception which was passed in when the instance was created.
	 */
	public Throwable getException() {
		return exception;
	}

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