Java Reference
In-Depth Information
If you need to write files in this format, everything works as you'd expect—you create a
GZipOutputStream
and write on it, usually using it through a
DataOutputStream
,
BufferedWriter
, or
PrintWriter
.
See Also
InflaterInputStream
,
InflaterOutputStream
,
DeflaterInputStream
, and
Deflater-
OutputStream
provide access to general-purpose compression and decompression; these
stream classes provide an I/O-based implementation of
Inflater
and
Deflater
.
Learning about the Communications API for Serial and
Parallel Ports
Problem
You have a computer with a serial or parallel port, and you want to read and write on such a
port.
Solution
Find an implementation of the Java Communications API (
javax.comm
) and write code us-
ing it. Get a list of Communicaton Ports, and pick one port. You can use the
CommPortIden-
tifier
's
open()
method to get a
SerialPort
object.
Discussion
scanners, data/fax modems, plotters, robots, telephones, light switches, weather gauges,
smartphones, and many others exist “out there,” beyond the confines of your desktop or serv-
er machine. We need a way to reach out to them.
The Java Communications API not only gave us that but cleverly unifies the programming
model for dealing with a range of external devices. It supports both serial (RS232/434,
COM, or tty) and parallel (printer, LPT) ports.
