Closeable, Flushable, Appendable, AutoCloseable
public class FileWriter extends OutputStreamWriter
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.
| Constructor | Description |
|---|---|
FileWriter |
|
FileWriter |
Constructs a FileWriter given a file descriptor, using the default charset. |
FileWriter |
Constructs a FileWriter given the File to write and a boolean indicating whether to append the data written, using the default charset. |
FileWriter |
|
FileWriter |
Constructs a FileWriter given the File to write, charset and a boolean indicating whether to append the data written. |
FileWriter |
Constructs a FileWriter given a file name, using the default charset
|
FileWriter |
Constructs a FileWriter given a file name and a boolean indicating whether to append the data written, using the default charset. |
FileWriter |
Constructs a FileWriter given a file name and charset. |
FileWriter |
Constructs a FileWriter given a file name, charset and a boolean indicating whether to append the data written. |
close, flush, getEncoding, write, write, write
public FileWriter(String fileName) throws IOException
FileWriter given a file name, using the default charset
fileName - String The system-dependent filename.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 reasonpublic FileWriter(String fileName, boolean append) throws IOException
FileWriter given a file name and a boolean indicating whether to append the data written, using the default charset.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.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 reasonpublic FileWriter(File file) throws IOException
file - the File to write.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 reasonpublic FileWriter(File file, boolean append) throws IOException
FileWriter given the File to write and a boolean indicating whether to append the data written, using the default charset.file - the File to writeappend - if true, then bytes will be written to the end of the file rather than the beginningIOException - 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 reasonpublic FileWriter(FileDescriptor fd)
FileWriter given a file descriptor, using the default charset.fd - the FileDescriptor to write.public FileWriter(String fileName, Charset charset) throws IOException
FileWriter given a file name and charset.fileName - the name of the file to writecharset - the charset
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 reasonpublic FileWriter(String fileName, Charset charset, boolean append) throws IOException
FileWriter given a file name, charset and a boolean indicating whether to append the data written.fileName - the name of the file to writecharset - the charset
append - a boolean. If true, the writer will write the data to the end of the file rather than the beginning.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 reasonpublic FileWriter(File file, Charset charset) throws IOException
file - the File to writecharset - the charset
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 reasonpublic FileWriter(File file, Charset charset, boolean append) throws IOException
FileWriter given the File to write, charset and a boolean indicating whether to append the data written.file - the File to writecharset - the charset
append - a boolean. If true, the writer will write the data to the end of the file rather than the beginning.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
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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/io/FileWriter.html