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30 * Convenience class for writing character files. The constructors of this
31 * class assume that the default character encoding and the default byte-buffer
32 * size are acceptable. To specify these values yourself, construct an
33 * OutputStreamWriter on a FileOutputStream.
35 * <p>Whether or not a file is available or may be created depends upon the
36 * underlying platform. Some platforms, in particular, allow a file to be
37 * opened for writing by only one <tt>FileWriter</tt> (or other file-writing
38 * object) at a time. In such situations the constructors in this class
39 * will fail if the file involved is already open.
41 * <p><code>FileWriter</code> is meant for writing streams of characters.
42 * For writing streams of raw bytes, consider using a
43 * <code>FileOutputStream</code>.
45 * @see OutputStreamWriter
46 * @see FileOutputStream
48 * @author Mark Reinhold
52 public class FileWriter extends OutputStreamWriter {
55 * Constructs a FileWriter object given a file name.
57 * @param fileName String The system-dependent filename.
58 * @throws IOException if the named file exists but is a directory rather
59 * than a regular file, does not exist but cannot be
60 * created, or cannot be opened for any other reason
62 public FileWriter(String fileName) throws IOException {
63 super(new FileOutputStream(fileName));
67 * Constructs a FileWriter object given a file name with a boolean
68 * indicating whether or not to append the data written.
70 * @param fileName String The system-dependent filename.
71 * @param append boolean if <code>true</code>, then data will be written
72 * to the end of the file rather than the beginning.
73 * @throws IOException if the named file exists but is a directory rather
74 * than a regular file, does not exist but cannot be
75 * created, or cannot be opened for any other reason
77 public FileWriter(String fileName, boolean append) throws IOException {
78 super(new FileOutputStream(fileName, append));
82 * Constructs a FileWriter object given a File object.
84 * @param file a File object to write to.
85 * @throws IOException if the file exists but is a directory rather than
86 * a regular file, does not exist but cannot be created,
87 * or cannot be opened for any other reason
89 public FileWriter(File file) throws IOException {
90 super(new FileOutputStream(file));
94 * Constructs a FileWriter object given a File object. If the second
95 * argument is <code>true</code>, then bytes will be written to the end
96 * of the file rather than the beginning.
98 * @param file a File object to write to
99 * @param append if <code>true</code>, then bytes will be written
100 * to the end of the file rather than the beginning
101 * @throws IOException if the file exists but is a directory rather than
102 * a regular file, does not exist but cannot be created,
103 * or cannot be opened for any other reason
106 public FileWriter(File file, boolean append) throws IOException {
107 super(new FileOutputStream(file, append));
111 * Constructs a FileWriter object associated with a file descriptor.
113 * @param fd FileDescriptor object to write to.
115 public FileWriter(FileDescriptor fd) {
116 super(new FileOutputStream(fd));