/*
 * Copyright (c) 1995, 2011, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package java.lang;

/**
 * An {@code Error} is a subclass of {@code Throwable}
 * that indicates serious problems that a reasonable application
 * should not try to catch. Most such errors are abnormal conditions.
 * The {@code ThreadDeath} error, though a "normal" condition,
 * is also a subclass of {@code Error} because most applications
 * should not try to catch it.
 * <p>
 * A method is not required to declare in its {@code throws}
 * clause any subclasses of {@code Error} that might be thrown
 * during the execution of the method but not caught, since these
 * errors are abnormal conditions that should never occur.
 *
 * That is, {@code Error} and its subclasses are regarded as unchecked
 * exceptions for the purposes of compile-time checking of exceptions.
 *
 * @author  Frank Yellin
 * @see     java.lang.ThreadDeath
 * jls 11.2 Compile-Time Checking of Exceptions
 * @since   JDK1.0
 */
public class Error extends Throwable {
	static final long serialVersionUID = 4980196508277280342L;

	/**
	 * Constructs a new error with {@code null} as its detail message.
	 * The cause is not initialized, and may subsequently be initialized by a
	 * call to {@link #initCause}.
	 */
	public Error() {
		super();
	}

	/**
	 * Constructs a new error with the specified detail message.  The
	 * cause is not initialized, and may subsequently be initialized by
	 * a call to {@link #initCause}.
	 *
	 * @param   message   the detail message. The detail message is saved for
	 *          later retrieval by the {@link #getMessage()} method.
	 */
	public Error(String message) {
		super(message);
	}

	/**
	 * Constructs a new error with the specified detail message and
	 * cause.  <p>Note that the detail message associated with
	 * {@code cause} is <i>not</i> automatically incorporated in
	 * this error's detail message.
	 *
	 * @param  message the detail message (which is saved for later retrieval
	 *         by the {@link #getMessage()} method).
	 * @param  cause the cause (which is saved for later retrieval by the
	 *         {@link #getCause()} method).  (A {@code null} value is
	 *         permitted, and indicates that the cause is nonexistent or
	 *         unknown.)
	 * @since  1.4
	 */
	public Error(String message, Throwable cause) {
		super(message, cause);
	}

	/**
	 * Constructs a new error with the specified cause and a detail
	 * message of {@code (cause==null ? null : cause.toString())} (which
	 * typically contains the class and detail message of {@code cause}).
	 * This constructor is useful for errors that are little more than
	 * wrappers for other throwables.
	 *
	 * @param  cause the cause (which is saved for later retrieval by the
	 *         {@link #getCause()} method).  (A {@code null} value is
	 *         permitted, and indicates that the cause is nonexistent or
	 *         unknown.)
	 * @since  1.4
	 */
	public Error(Throwable cause) {
		super(cause);
	}

	/**
	 * Constructs a new error with the specified detail message,
	 * cause, suppression enabled or disabled, and writable stack
	 * trace enabled or disabled.
	 *
	 * @param  message the detail message.
	 * @param cause the cause.  (A {@code null} value is permitted,
	 * and indicates that the cause is nonexistent or unknown.)
	 * @param enableSuppression whether or not suppression is enabled
	 *                          or disabled
	 * @param writableStackTrace whether or not the stack trace should
	 *                           be writable
	 *
	 * @since 1.7
	 */
	protected Error(String message, Throwable cause,
					boolean enableSuppression,
					boolean writableStackTrace) {
		super(message, cause, enableSuppression, writableStackTrace);
	}
}
