jdk/src/share/classes/java/io/FileReader.java
changeset 2 90ce3da70b43
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0:fd16c54261b3 2:90ce3da70b43
       
     1 /*
       
     2  * Copyright 1996-2001 Sun Microsystems, Inc.  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.  Sun designates this
       
     8  * particular file as subject to the "Classpath" exception as provided
       
     9  * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
       
    22  * CA 95054 USA or visit www.sun.com if you need additional information or
       
    23  * have any questions.
       
    24  */
       
    25 
       
    26 package java.io;
       
    27 
       
    28 
       
    29 /**
       
    30  * Convenience class for reading character files.  The constructors of this
       
    31  * class assume that the default character encoding and the default byte-buffer
       
    32  * size are appropriate.  To specify these values yourself, construct an
       
    33  * InputStreamReader on a FileInputStream.
       
    34  *
       
    35  * <p><code>FileReader</code> is meant for reading streams of characters.
       
    36  * For reading streams of raw bytes, consider using a
       
    37  * <code>FileInputStream</code>.
       
    38  *
       
    39  * @see InputStreamReader
       
    40  * @see FileInputStream
       
    41  *
       
    42  * @author      Mark Reinhold
       
    43  * @since       JDK1.1
       
    44  */
       
    45 public class FileReader extends InputStreamReader {
       
    46 
       
    47    /**
       
    48     * Creates a new <tt>FileReader</tt>, given the name of the
       
    49     * file to read from.
       
    50     *
       
    51     * @param fileName the name of the file to read from
       
    52     * @exception  FileNotFoundException  if the named file does not exist,
       
    53     *                   is a directory rather than a regular file,
       
    54     *                   or for some other reason cannot be opened for
       
    55     *                   reading.
       
    56     */
       
    57     public FileReader(String fileName) throws FileNotFoundException {
       
    58         super(new FileInputStream(fileName));
       
    59     }
       
    60 
       
    61    /**
       
    62     * Creates a new <tt>FileReader</tt>, given the <tt>File</tt>
       
    63     * to read from.
       
    64     *
       
    65     * @param file the <tt>File</tt> to read from
       
    66     * @exception  FileNotFoundException  if the file does not exist,
       
    67     *                   is a directory rather than a regular file,
       
    68     *                   or for some other reason cannot be opened for
       
    69     *                   reading.
       
    70     */
       
    71     public FileReader(File file) throws FileNotFoundException {
       
    72         super(new FileInputStream(file));
       
    73     }
       
    74 
       
    75    /**
       
    76     * Creates a new <tt>FileReader</tt>, given the
       
    77     * <tt>FileDescriptor</tt> to read from.
       
    78     *
       
    79     * @param fd the FileDescriptor to read from
       
    80     */
       
    81     public FileReader(FileDescriptor fd) {
       
    82         super(new FileInputStream(fd));
       
    83     }
       
    84 
       
    85 }