abstract public class: OutputStream
All Implemented Interfaces:
This abstract class is the superclass of all classes representing
an output stream of bytes. An output stream accepts output bytes
and sends them to some sink.
Applications that need to define a subclass of
OutputStream must always provide at least a method
that writes one byte of output.
|Methods from java.lang.Object:|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait|
|Method from java.io.OutputStream Detail:|
public void close() throws IOException
public void flush() throws IOException
Flushes this output stream and forces any buffered output bytes
to be written out. The general contract of
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
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.
flush method of
OutputStream does nothing.
abstract public void write(int b) throws IOException
public void write(byte b) throws IOException
b.length bytes from the specified byte array
to this output stream. The general contract for
is that it should have exactly the same effect as the call
write(b, 0, b.length).
public void write(byte b,
int len) throws IOException
len bytes from the specified byte array
starting at offset
off to this output stream.
The general contract for
write(b, off, len) is that
some of the bytes in the array
b are written to the
output stream in order; element
b[off] is the first
byte written and
b[off+len-1] is the last byte written
by this operation.
write method of
the write method of one argument on each of the bytes to be
written out. Subclasses are encouraged to override this method and
provide a more efficient implementation.
NullPointerException is thrown.
off is negative, or
len is negative, or
off+len is greater than the length of the array
b, then an IndexOutOfBoundsException is thrown.