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Class java.io.FileOutputStream

java.lang.Object
|
   +----java.io.OutputStream
|
           +----java.io.FileOutputStream

public class FileOutputStream

extends OutputStream

See Also:

File, FileDescriptor, FileInputStream

FileOutputStream(File)

Creates a file output stream to write to the specified File object.

FileOutputStream(FileDescriptor)

Creates an output file stream to write to the specified file descriptor.

FileOutputStream(String)

Creates an output file stream to write to the file with the specified name.

FileOutputStream(String, boolean)

Creates an output file with the specified system dependent file name.

close()

Closes this file output stream and releases any system resources associated with this stream.

finalize()

Ensures that the close method of this file output stream is called when there are no more references to this stream.

getFD()

Returns the file descriptor associated with this stream.

write(byte[])

Writes b.length bytes from the specified byte array to this file output stream.

write(byte[], int, int)

Writes len bytes from the specified byte array starting at offset off to this file output stream.

write(int)

Writes the specified byte to this file output stream.

public FileOutputStream(String name) throws IOException

Creates an output file stream to write to the file with the specified name.

Parameters:

name - the system-dependent filename.

Throws: IOException

if the file could not be opened for writing.

Throws: SecurityException

if a security manager exists, its checkWrite method is called with the name argument to see if the application is allowed write access to the file.

See Also:

checkWrite

public FileOutputStream(String name,
                         boolean append) throws IOException

Creates an output file with the specified system dependent file name.

Parameters:

name - the system dependent file name

Throws: IOException

If the file is not found.

public FileOutputStream(File file) throws IOException

Creates a file output stream to write to the specified File object.

Parameters:

file - the file to be opened for writing.

Throws: IOException

if the file could not be opened for writing.

Throws: SecurityException

if a security manager exists, its checkWrite method is called with the pathname of the File argument to see if the application is allowed write access to the file. This may result in a security exception.

See Also:

getPath, SecurityException, checkWrite

public FileOutputStream(FileDescriptor fdObj)

Creates an output file stream to write to the specified file descriptor.

Parameters:

fdObj - the file descriptor to be opened for writing.

Throws: SecurityException

if a security manager exists, its checkWrite method is called with the file descriptor to see if the application is allowed to write to the specified file descriptor.

See Also:

checkWrite

public native void write(int b) throws IOException

Writes the specified byte to this file output stream.

Parameters:

b - the byte to be written.

Throws: IOException

if an I/O error occurs.

Overrides:

write in class OutputStream

public void write(byte b[]) throws IOException

Writes b.length bytes from the specified byte array to this file output stream.

Parameters:

b - the data.

Throws: IOException

if an I/O error occurs.

Overrides:

write in class OutputStream

public void write(byte b[],
                   int off,
                   int len) throws IOException

Writes len bytes from the specified byte array starting at offset off to this file output stream.

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

Throws: IOException

if an I/O error occurs.

Overrides:

write in class OutputStream

public native void close() throws IOException

Closes this file output stream and releases any system resources associated with this stream.

Throws: IOException

if an I/O error occurs.

Overrides:

close in class OutputStream

public final FileDescriptor getFD() throws IOException

Returns the file descriptor associated with this stream.

Returns:

the file descriptor object associated with this stream.

Throws: IOException

if an I/O error occurs.

See Also:

FileDescriptor

protected void finalize() throws IOException

Ensures that the close method of this file output stream is called when there are no more references to this stream.

Throws: IOException

if an I/O error occurs.

Overrides:

finalize in class Object

See Also:

close

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