1 /*
   2  * Copyright (c) 1994, 2008, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.io;
  27 
  28 
  29 /**
  30  * Signals that an attempt to open the file denoted by a specified pathname
  31  * has failed.
  32  *
  33  * <p> This exception will be thrown by the {@link FileInputStream}, {@link
  34  * FileOutputStream}, and {@link RandomAccessFile} constructors when a file
  35  * with the specified pathname does not exist.  It will also be thrown by these
  36  * constructors if the file does exist but for some reason is inaccessible, for
  37  * example when an attempt is made to open a read-only file for writing.
  38  *
  39  * @author  unascribed
  40  * @since   1.0
  41  */
  42 
  43 public class FileNotFoundException extends IOException {
  44     private static final long serialVersionUID = -897856973823710492L;
  45 
  46     /**
  47      * Constructs a <code>FileNotFoundException</code> with
  48      * <code>null</code> as its error detail message.
  49      */
  50     public FileNotFoundException() {
  51         super();
  52     }
  53 
  54     /**
  55      * Constructs a <code>FileNotFoundException</code> with the
  56      * specified detail message. The string <code>s</code> can be
  57      * retrieved later by the
  58      * <code>{@link java.lang.Throwable#getMessage}</code>
  59      * method of class <code>java.lang.Throwable</code>.
  60      *
  61      * @param   s   the detail message.
  62      */
  63     public FileNotFoundException(String s) {
  64         super(s);
  65     }
  66 
  67     /**
  68      * Constructs a <code>FileNotFoundException</code> with a detail message
  69      * consisting of the given pathname string followed by the given reason
  70      * string.  If the <code>reason</code> argument is <code>null</code> then
  71      * it will be omitted.  This private constructor is invoked only by native
  72      * I/O methods.
  73      *
  74      * @since 1.2
  75      */
  76     private FileNotFoundException(String path, String reason) {
  77         super(path + ((reason == null)
  78                       ? ""
  79                       : " (" + reason + ")"));
  80     }
  81 
  82 }