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FileWriter.javaAPI DocJava SE 5 API3851Fri Aug 26 14:56:58 BST 2005java.io

FileWriter

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.

see
OutputStreamWriter
see
FileOutputStream
version
1.18, 03/12/19
author
Mark Reinhold
since
JDK1.1

Fields Summary
Constructors Summary
public FileWriter(String fileName)
Constructs a FileWriter object given a file name.

param
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

	super(new FileOutputStream(fileName));
public 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.

param
fileName String The system-dependent filename.
param
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

	super(new FileOutputStream(fileName, append));
public FileWriter(File file)
Constructs a FileWriter object given a File object.

param
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

	super(new FileOutputStream(file));
public FileWriter(File file, boolean append)
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.

param
file a File object to write to
param
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

        super(new FileOutputStream(file, append));
public FileWriter(FileDescriptor fd)
Constructs a FileWriter object associated with a file descriptor.

param
fd FileDescriptor object to write to.

	super(new FileOutputStream(fd));
Methods Summary