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    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   JDK1.0
   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   }

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