/*

 * Copyright (c) 1996, 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package java.io;

import java.nio.charset.Charset;

/**

 * Reads text from character files using a default buffer size. Decoding from bytes

 * to characters uses either a specified {@linkplain java.nio.charset.Charset charset}

 * or the platform's

 * {@linkplain java.nio.charset.Charset#defaultCharset() default charset}.

 *

 * <p>

 * The {@code FileReader} is meant for reading streams of characters. For reading

 * streams of raw bytes, consider using a {@code FileInputStream}.

 *

 * @see InputStreamReader

 * @see FileInputStream

 *

 * @author      Mark Reinhold

 * @since       1.1

 */

public class FileReader extends InputStreamReader {

   /**

    * Creates a new {@code FileReader}, given the name of the file to read,

    * using the platform's

    * {@linkplain java.nio.charset.Charset#defaultCharset() default charset}.

    *

    * @param fileName the name of the file to read

    * @exception  FileNotFoundException  if the named file does not exist,

    *                   is a directory rather than a regular file,

    *                   or for some other reason cannot be opened for

    *                   reading.

    */

    public FileReader(String fileName) throws FileNotFoundException {

        super(new FileInputStream(fileName));

    }

   /**

    * Creates a new {@code FileReader}, given the {@code File} to read,

    * using the platform's

    * {@linkplain java.nio.charset.Charset#defaultCharset() default charset}.

    *

    * @param file the {@code File} to read

    * @exception  FileNotFoundException  if the file does not exist,

    *                   is a directory rather than a regular file,

    *                   or for some other reason cannot be opened for

    *                   reading.

    */

    public FileReader(File file) throws FileNotFoundException {

        super(new FileInputStream(file));

    }

   /**

    * Creates a new {@code FileReader}, given the {@code FileDescriptor} to read,

    * using the platform's

    * {@linkplain java.nio.charset.Charset#defaultCharset() default charset}.

    *

    * @param fd the {@code FileDescriptor} to read

    */

    public FileReader(FileDescriptor fd) {

        super(new FileInputStream(fd));

    }

   /**

    * Creates a new {@code FileReader}, given the name of the file to read

    * and the {@linkplain java.nio.charset.Charset charset}.

    *

    * @param fileName the name of the file to read

    * @param charset the {@linkplain java.nio.charset.Charset charset}

    * @exception  IOException  if the named file does not exist,

    *                   is a directory rather than a regular file,

    *                   or for some other reason cannot be opened for

    *                   reading.

    *

    * @since 11

    */

    public FileReader(String fileName, Charset charset) throws IOException {

        super(new FileInputStream(fileName), charset);

    }

   /**

    * Creates a new {@code FileReader}, given the {@code File} to read and

    * the {@linkplain java.nio.charset.Charset charset}.

    *

    * @param file the {@code File} to read

    * @param charset the {@linkplain java.nio.charset.Charset charset}

    * @exception  IOException  if the file does not exist,

    *                   is a directory rather than a regular file,

    *                   or for some other reason cannot be opened for

    *                   reading.

    *

    * @since 11

    */

    public FileReader(File file, Charset charset) throws IOException {

        super(new FileInputStream(file), charset);

    }

}