/*

 * Copyright (c) 1994, 2020, 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.io;

/**

 * Signals that an attempt to open the file denoted by a specified pathname

 * has failed.

 *

 * <p> This exception will be thrown by the {@link FileInputStream}, {@link

 * FileOutputStream}, and {@link RandomAccessFile} constructors when a file

 * with the specified pathname does not exist.  It will also be thrown by these

 * constructors if the file does exist but for some reason is inaccessible, for

 * example when an attempt is made to open a read-only file for writing.

 *

 * @since   1.0

 */

public class FileNotFoundException extends IOException {

    @java.io.Serial

    private static final long serialVersionUID = -897856973823710492L;

    /**

     * Constructs a {@code FileNotFoundException} with

     * {@code null} as its error detail message.

     */

    public FileNotFoundException() {

        super();

    }

    /**

     * Constructs a {@code FileNotFoundException} with the

     * specified detail message. The string {@code s} can be

     * retrieved later by the

     * {@link java.lang.Throwable#getMessage}

     * method of class {@code java.lang.Throwable}.

     *

     * @param   s   the detail message.

     */

    public FileNotFoundException(String s) {

        super(s);

    }

    /**

     * Constructs a {@code FileNotFoundException} with a detail message

     * consisting of the given pathname string followed by the given reason

     * string.  If the {@code reason} argument is {@code null} then

     * it will be omitted.  This private constructor is invoked only by native

     * I/O methods.

     *

     * @since 1.2

     */

    private FileNotFoundException(String path, String reason) {

        super(path + ((reason == null)

                      ? ""

                      : " (" + reason + ")"));

    }

}