All Implemented Interfaces:
Closeable, Flushable, Appendable, AutoCloseable

Writes text to character files using a default buffer size. Encoding from characters to bytes uses either a specified charset or the default charset.

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.

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

Since:
1.1
See Also:

  • Field Summary

  • Constructor Summary

    Constructors

    Constructs a FileWriter given a file descriptor, using the default charset.

    FileWriter(File file, boolean append)

    Constructs a FileWriter given the File to write and a boolean indicating whether to append the data written, using the default charset.

    Constructs a FileWriter given the File to write and charset.

    Constructs a FileWriter given the File to write, charset and a boolean indicating whether to append the data written.

    FileWriter(String fileName, boolean append)

    Constructs a FileWriter given a file name and a boolean indicating whether to append the data written, using the default charset.

    Constructs a FileWriter given a file name and charset.

    Constructs a FileWriter given a file name, charset and a boolean indicating whether to append the data written.

  • Method Summary

    Methods declared in class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • FileWriter

      Constructs a FileWriter given a file name, using the default charset

      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
      See Also:

    • FileWriter

      public FileWriter(String fileName, boolean append) throws IOException

      Constructs a FileWriter given a file name and a boolean indicating whether to append the data written, using the default charset.

      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
      See Also:

    • FileWriter

      Constructs a FileWriter given the File to write, using the default charset

      Parameters:
      file - the File to write.
      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
      See Also:

    • FileWriter

      public FileWriter(File file, boolean append) throws IOException

      Constructs a FileWriter given the File to write and a boolean indicating whether to append the data written, using the default charset.

      Parameters:
      file - the File to write
      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
      See Also:

    • FileWriter

      Constructs a FileWriter given a file descriptor, using the default charset.

      Parameters:
      fd - the FileDescriptor to write.
      See Also:

    • FileWriter

      Constructs a FileWriter given a file name and charset.

      Parameters:
      fileName - the name of the file to write
      charset - the charset
      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
      Since:
      11

    • FileWriter

      Constructs a FileWriter given a file name, charset and a boolean indicating whether to append the data written.

      Parameters:
      fileName - the name of the file to write
      charset - the charset
      append - a boolean. If true, the writer will write the data 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
      Since:
      11

    • FileWriter

      Constructs a FileWriter given the File to write and charset.

      Parameters:
      file - the File to write
      charset - the charset
      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:
      11

    • FileWriter

      Constructs a FileWriter given the File to write, charset and a boolean indicating whether to append the data written.

      Parameters:
      file - the File to write
      charset - the charset
      append - a boolean. If true, the writer will write the data 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:
      11