/* * 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);    }}