1 /*
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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
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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
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19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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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      */
FileNotFoundException()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      */
FileNotFoundException(String s)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      */
FileNotFoundException(String path, String reason)76     private FileNotFoundException(String path, String reason) {
77         super(path + ((reason == null)
78                       ? ""
79                       : " (" + reason + ")"));
80     }
81 
82 }
83