Source Code Cross Referenced for FileWriter.java in  » 6.0-JDK-Core » io-nio » java » io » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Core » io nio » java.io 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001        /*
002         * Copyright 1996-2001 Sun Microsystems, Inc.  All Rights Reserved.
003         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004         *
005         * This code is free software; you can redistribute it and/or modify it
006         * under the terms of the GNU General Public License version 2 only, as
007         * published by the Free Software Foundation.  Sun designates this
008         * particular file as subject to the "Classpath" exception as provided
009         * by Sun in the LICENSE file that accompanied this code.
010         *
011         * This code is distributed in the hope that it will be useful, but WITHOUT
012         * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013         * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
014         * version 2 for more details (a copy is included in the LICENSE file that
015         * accompanied this code).
016         *
017         * You should have received a copy of the GNU General Public License version
018         * 2 along with this work; if not, write to the Free Software Foundation,
019         * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020         *
021         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022         * CA 95054 USA or visit www.sun.com if you need additional information or
023         * have any questions.
024         */
025
026        package java.io;
027
028        /**
029         * Convenience class for writing character files.  The constructors of this
030         * class assume that the default character encoding and the default byte-buffer
031         * size are acceptable.  To specify these values yourself, construct an
032         * OutputStreamWriter on a FileOutputStream.
033         *
034         * <p>Whether or not a file is available or may be created depends upon the
035         * underlying platform.  Some platforms, in particular, allow a file to be
036         * opened for writing by only one <tt>FileWriter</tt> (or other file-writing
037         * object) at a time.  In such situations the constructors in this class
038         * will fail if the file involved is already open.
039         *
040         * <p><code>FileWriter</code> is meant for writing streams of characters.
041         * For writing streams of raw bytes, consider using a
042         * <code>FileOutputStream</code>.
043         *
044         * @see OutputStreamWriter
045         * @see FileOutputStream
046         *
047         * @version 	1.25, 07/05/05
048         * @author	Mark Reinhold
049         * @since	JDK1.1
050         */
051
052        public class FileWriter extends OutputStreamWriter {
053
054            /**
055             * Constructs a FileWriter object given a file name.
056             *
057             * @param fileName  String The system-dependent filename.
058             * @throws IOException  if the named file exists but is a directory rather
059             *                  than a regular file, does not exist but cannot be
060             *                  created, or cannot be opened for any other reason
061             */
062            public FileWriter(String fileName) throws IOException {
063                super (new FileOutputStream(fileName));
064            }
065
066            /**
067             * Constructs a FileWriter object given a file name with a boolean
068             * indicating whether or not to append the data written.
069             *
070             * @param fileName  String The system-dependent filename.
071             * @param append    boolean if <code>true</code>, then data will be written
072             *                  to the end of the file rather than the beginning.
073             * @throws IOException  if the named file exists but is a directory rather
074             *                  than a regular file, does not exist but cannot be
075             *                  created, or cannot be opened for any other reason
076             */
077            public FileWriter(String fileName, boolean append)
078                    throws IOException {
079                super (new FileOutputStream(fileName, append));
080            }
081
082            /**
083             * Constructs a FileWriter object given a File object.
084             *
085             * @param file  a File object to write to.
086             * @throws IOException  if the file exists but is a directory rather than
087             *                  a regular file, does not exist but cannot be created,
088             *                  or cannot be opened for any other reason
089             */
090            public FileWriter(File file) throws IOException {
091                super (new FileOutputStream(file));
092            }
093
094            /**
095             * Constructs a FileWriter object given a File object. If the second
096             * argument is <code>true</code>, then bytes will be written to the end
097             * of the file rather than the beginning.
098             *
099             * @param file  a File object to write to
100             * @param     append    if <code>true</code>, then bytes will be written
101             *                      to the end of the file rather than the beginning
102             * @throws IOException  if the file exists but is a directory rather than
103             *                  a regular file, does not exist but cannot be created,
104             *                  or cannot be opened for any other reason
105             * @since 1.4
106             */
107            public FileWriter(File file, boolean append) throws IOException {
108                super (new FileOutputStream(file, append));
109            }
110
111            /**
112             * Constructs a FileWriter object associated with a file descriptor.
113             *
114             * @param fd  FileDescriptor object to write to.
115             */
116            public FileWriter(FileDescriptor fd) {
117                super (new FileOutputStream(fd));
118            }
119
120        }
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