FileOutputStream JDK 1.6)

Constructors

public FileOutputStream (File file) throws FileNotFoundException

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

Creates a file output stream to write to the file represented by the specified File object. A new FileDescriptor object is created to represent this file connection.

First, if there is a security manager, its checkWrite method is called with the path represented by the file argument as its argument.

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 then a FileNotFoundException is thrown.
Parameters:
- file - the file to be opened for writing.
Throws:
- FileNotFoundException - 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
- SecurityException - if a security manager exists and its checkWrite method denies write access to the file.
See Also: File.getPath(), SecurityException, SecurityManager.checkWrite(java.lang.String),

public FileOutputStream (File file, boolean append) throws FileNotFoundException

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

Creates a file output stream to write to the file represented by the specified File object. If the second argument is true, then bytes will be written to the end of the file rather than the beginning. A new FileDescriptor object is created to represent this file connection.

First, if there is a security manager, its checkWrite method is called with the path represented by the file argument as its argument.

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 then a FileNotFoundException is thrown.
Parameters:
- file - the file to be opened for writing.
- append - if true, then bytes will be written to the end of the file rather than the beginning
Throws:
- FileNotFoundException - 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
- SecurityException - if a security manager exists and its checkWrite method denies write access to the file.
Since: 1.4
See Also: File.getPath(), SecurityException, SecurityManager.checkWrite(java.lang.String),

public FileOutputStream (FileDescriptor fdObj)

Creates an output file stream to write to the specified file descriptor, which represents an existing connection to an actual file in the file system.

public FileOutputStream (String name) throws FileNotFoundException

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

Creates an output file stream to write to the file with the specified name. A new FileDescriptor object is created to represent this file connection.

First, if there is a security manager, its checkWrite method is called with name as its argument.

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 then a FileNotFoundException is thrown.
Parameters:
- name - the system-dependent filename
Throws:
- FileNotFoundException - 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
- SecurityException - if a security manager exists and its checkWrite method denies write access to the file.
See Also: SecurityManager.checkWrite(java.lang.String),

public FileOutputStream (String name, boolean append) throws FileNotFoundException

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

Creates an output file stream to write to the file with the specified name. If the second argument is true, then bytes will be written to the end of the file rather than the beginning. A new FileDescriptor object is created to represent this file connection.

First, if there is a security manager, its checkWrite method is called with name as its argument.

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 then a FileNotFoundException is thrown.
Parameters:
- name - the system-dependent file name
- append - if true, then bytes will be written to the end of the file rather than the beginning
Throws:
- FileNotFoundException - 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.
- SecurityException - if a security manager exists and its checkWrite method denies write access to the file.
Since: JDK1.1
See Also: SecurityManager.checkWrite(java.lang.String),

Methods

Hide/Show inherited methods

public void close () throws IOException [Overrides OutputStream]

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

protected void finalize () throws IOException

Cleans up the connection to the file, and ensures that the close method of this file output stream is called when there are no more references to this stream.

Cleans up the connection to the file, and 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.
See Also: FileInputStream.close(),

public void flush () throws IOException [Inherited From OutputStream]

Flushes this output stream and forces any buffered output bytes to be written out.

Flushes this output stream and forces any buffered output bytes to be written out. The general contract of flush is that calling it is an indication that, if any bytes previously written have been buffered by the implementation of the output stream, such bytes should immediately be written to their intended destination.

If the intended destination of this stream is an abstraction provided by the underlying operating system, for example a file, then flushing the stream guarantees only that bytes previously written to the stream are passed to the operating system for writing; it does not guarantee that they are actually written to a physical device such as a disk drive.

The flush method of OutputStream does nothing.
Throws:
- IOException - if an I/O error occurs.

public FileChannel getChannel ()

Returns the unique FileChannel object associated with this file output stream.

publicfinal FileDescriptor getFD () throws IOException

Returns the file descriptor associated with this stream.

Returns the file descriptor associated with this stream.
Returns: the FileDescriptor object that represents the connection to the file in the file system being used by this FileOutputStream object.
Throws:
- IOException - if an I/O error occurs.
See Also: FileDescriptor,

public void write (byte[] b) throws IOException [Overrides OutputStream]

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

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.

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

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

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.

publicnative void write (int b) throws IOException [Specified in OutputStream]

Writes the specified byte to this file output stream.

Writes the specified byte to this file output stream. Implements
the write method of OutputStream.
Parameters:
- b - the byte to be written.
Throws:
- IOException - if an I/O error occurs.