java.lang.Object | +--java.io.OutputStream | +--java.io.FileOutputStream
FileOutputStream(java.lang.String name) This method initializes a |
FileOutputStream(java.io.File file) This method initializes a |
FileOutputStream(java.lang.String name, boolean append) This method initializes a |
FileOutputStream(java.io.FileDescriptor fd) This method initializes a |
synchronized void | close() This method closes the underlying file. |
void | finalize() This method closes the stream when this object is being garbage collected. |
java.nio.channels.FileChannel | getChannel() |
java.io.FileDescriptor | getFD() This method returns a |
synchronized void | write(int b) This method writes a single byte of data to the file. |
synchronized void | write(byte[] buf) This method writes all the bytes in the specified array to the file. |
synchronized void | write(byte[] buf, int offset, int len) This method writes |
public FileOutputStream(java.io.File file)
FileOutputStream
object to write
to the specified File
object. The file is created if it
does not exist, and the bytes written are written starting at the
beginning of the file.
Before opening a file, a security check is performed by calling the
checkWrite
method of the SecurityManager
(if
one exists) with the name of the file to be opened. An exception is
thrown if writing is not allowed.
file
- The File
object this stream should write toSecurityException
- If write access to the file is not allowedFileNotFoundException
- If a non-security error occurspublic FileOutputStream(java.io.FileDescriptor fd)
FileOutputStream
object to write
to the file represented by the specified FileDescriptor
object. This method does not create any underlying disk file or
reposition the file pointer of the given descriptor. It assumes that
this descriptor is ready for writing as is.
Before opening a file, a security check is performed by calling the
checkWrite
method of the SecurityManager
(if
one exists) with the specified FileDescriptor
as an argument.
An exception is thrown if writing is not allowed.
fd
- The FileDescriptor
this stream should write toSecurityException
- If write access to the file is not allowedpublic FileOutputStream(java.lang.String name)
FileOutputStream
object to write
to the named file. The file is created if it does not exist, and
the bytes written are written starting at the beginning of the file.
Before opening a file, a security check is performed by calling the
checkWrite
method of the SecurityManager
(if
one exists) with the name of the file to be opened. An exception is
thrown if writing is not allowed.
name
- The name of the file this stream should write toSecurityException
- If write access to the file is not allowedFileNotFoundException
- If a non-security error occurspublic FileOutputStream(java.lang.String name, boolean append)
FileOutputStream
object to write
to the named file. The file is created if it does not exist, and
the bytes written are written starting at the beginning of the file if
the append
argument is false
or at the end
of the file if the append
argument is true.
Before opening a file, a security check is performed by calling the
checkWrite
method of the SecurityManager
(if
one exists) with the name of the file to be opened. An exception is
thrown if writing is not allowed.
name
- The name of the file this stream should write toappend
- true to append bytes to the end of the file,
or false
to write bytes to the beginningSecurityException
- If write access to the file is not allowedFileNotFoundException
- If a non-security error occurspublic synchronized void close()
IOException
- If an error occursprotected void finalize()
IOException
- If an error occurs (ignored by the Java runtime)public FileChannel getChannel()
public final FileDescriptor getFD()
FileDescriptor
object representing
the file that is currently being written to
FileDescriptor
object for this streamIOException
- If an error occurspublic synchronized void write(byte[] buf)
buf
- The array of bytes to write to the fileIOException
- If an error occurspublic synchronized void write(byte[] buf, int offset, int len)
len
bytes from the byte array
buf
to the file starting at index offset
.
buf
- The array of bytes to write to the fileoffset
- The offset into the array to start writing bytes fromlen
- The number of bytes to write to the fileIOException
- If an error occurspublic synchronized void write(int b)
b
- The byte of data to write, passed as an int
IOException
- If an error occurs
FileDescriptor
.