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FileWriter

public class FileWriter
extends OutputStreamWriter

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


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.

Summary

Inherited fields

Public constructors

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.

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.

Inherited methods

Public constructors

FileWriter

added in API level 1
public FileWriter (String fileName)

Constructs a FileWriter object given a file name.

Parameters
fileName String: 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

added in API level 1
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.

Parameters
fileName String: String The system-dependent filename.

append boolean: 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

added in API level 1
public FileWriter (File file)

Constructs a FileWriter object given a File object.

Parameters
file 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

added in API level 1
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.

Parameters
file File: a File object to write to

append boolean: 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

FileWriter

added in API level 1
public FileWriter (FileDescriptor fd)

Constructs a FileWriter object associated with a file descriptor.

Parameters
fd FileDescriptor: FileDescriptor object to write to.