jdk/src/share/classes/java/io/FileReader.java
author duke
Sat, 01 Dec 2007 00:00:00 +0000
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/*
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 * Copyright 1996-2001 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Sun designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Sun in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 */
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package java.io;
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/**
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 * Convenience class for reading character files.  The constructors of this
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 * class assume that the default character encoding and the default byte-buffer
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 * size are appropriate.  To specify these values yourself, construct an
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 * InputStreamReader on a FileInputStream.
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 *
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 * <p><code>FileReader</code> is meant for reading streams of characters.
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 * For reading streams of raw bytes, consider using a
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 * <code>FileInputStream</code>.
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 *
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 * @see InputStreamReader
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 * @see FileInputStream
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 *
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 * @author      Mark Reinhold
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 * @since       JDK1.1
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 */
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public class FileReader extends InputStreamReader {
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   /**
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    * Creates a new <tt>FileReader</tt>, given the name of the
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    * file to read from.
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    *
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    * @param fileName the name of the file to read from
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    * @exception  FileNotFoundException  if the named file does not exist,
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    *                   is a directory rather than a regular file,
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    *                   or for some other reason cannot be opened for
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    *                   reading.
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    */
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    public FileReader(String fileName) throws FileNotFoundException {
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        super(new FileInputStream(fileName));
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    }
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   /**
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    * Creates a new <tt>FileReader</tt>, given the <tt>File</tt>
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    * to read from.
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    *
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    * @param file the <tt>File</tt> to read from
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    * @exception  FileNotFoundException  if the file does not exist,
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    *                   is a directory rather than a regular file,
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    *                   or for some other reason cannot be opened for
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    *                   reading.
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    */
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    public FileReader(File file) throws FileNotFoundException {
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        super(new FileInputStream(file));
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    }
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   /**
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    * Creates a new <tt>FileReader</tt>, given the
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    * <tt>FileDescriptor</tt> to read from.
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    *
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    * @param fd the FileDescriptor to read from
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    */
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    public FileReader(FileDescriptor fd) {
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        super(new FileInputStream(fd));
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    }
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}