Overview | Package | Class | Use | Tree | Deprecated | Index | Help
| Java™ Platform Standard Ed. 6
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## java.io
Class FileWriter

    java.lang.Object
      java.io.Writer
          java.io.OutputStreamWriter
              java.io.FileWriter

All Implemented Interfaces:
  Closeable, Flushable, Appendable

    public class FileWriter

extends OutputStreamWriter

Convenience class for writing character files. The constructors of this class assume that the default character encoding and the default byte-buffer size are acceptable. To specify these values yourself, construct an OutputStreamWriter on a FileOutputStream.

Whether or not a file is available or may be created depends upon the underlying platform. Some platforms, in particular, allow a file to be opened for writing by only one `FileWriter` (or other file-writing object) at a time. In such situations the constructors in this class will fail if the file involved is already open.

`FileWriter` is meant for writing streams of characters. For writing streams of raw bytes, consider using a `FileOutputStream`.

Since:
  JDK1.1
See Also:
  `OutputStreamWriter`, `FileOutputStream`

Field Summary

Fields inherited from class java.io.Writer
`lock`

Constructor Summary
`FileWriter(File file)` Constructs a FileWriter object given a File object.
`FileWriter(File file, boolean append)` Constructs a FileWriter object given a File object.
`FileWriter(FileDescriptor fd)` Constructs a FileWriter object associated with a file descriptor.
`FileWriter(String fileName)` Constructs a FileWriter object given a file name.
`FileWriter(String fileName, boolean append)` Constructs a FileWriter object given a file name with a boolean indicating whether or not to append the data written.

Method Summary

Methods inherited from class java.io.OutputStreamWriter
`close, flush, getEncoding, write, write, write`

Methods inherited from class java.io.Writer
`append, append, append, write, write`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### FileWriter

    public FileWriter(String fileName)
               throws IOException

  Constructs a FileWriter object given a file name.

  Parameters:
    `fileName` - String The system-dependent filename.
  Throws:
    `IOException` - if the named file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason

### FileWriter

    public FileWriter(String fileName,
                      boolean append)
               throws IOException

  Constructs a FileWriter object given a file name with a boolean indicating whether or not to append the data written.

  Parameters:
    `fileName` - String The system-dependent filename.
    `append` - boolean if `true`, then data will be written to the end of the file rather than the beginning.
  Throws:
    `IOException` - if the named file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason

### FileWriter

    public FileWriter(File file)
               throws IOException

  Constructs a FileWriter object given a File object.

  Parameters:
    `file` - a File object to write to.
  Throws:
    `IOException` - if the file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason

### FileWriter

    public FileWriter(File file,
                      boolean append)
               throws IOException

  Constructs a FileWriter object given a File object. If the second argument is `true`, then bytes will be written to the end of the file rather than the beginning.

  Parameters:
    `file` - a File object to write to
    `append` - if `true`, then bytes will be written to the end of the file rather than the beginning
  Throws:
    `IOException` - if the file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason
  Since:
    1.4

### FileWriter

    public FileWriter(FileDescriptor fd)

  Constructs a FileWriter object associated with a file descriptor.

  Parameters:
    `fd` - FileDescriptor object to write to.

Overview | Package | Class | Use | Tree | Deprecated | Index | Help
| Java™ Platform Standard Ed. 6
PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

Submit a bug or feature
For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright © 1993, 2010, Oracle and/or its affiliates. All rights reserved.