Re: RXTX Communication API javadocs

Knute Johnson <>
Sat, 28 Jun 2014 20:18:25 -0700
On 6/28/2014 15:12, Martin Gregorie wrote:

On Sat, 28 Jun 2014 13:45:17 -0700, ookachaka wrote:

On Sunday, February 15, 2009 9:46:50 PM UTC-8, Chanchal wrote:

Hello All,

Anyone having link to javadocs of RXTX Communication API, kindly share.

Thanks and Regards


Yes, there's something wrong (in my case).
The fril javadocs are not downloadable.

RXTX appears to be fairly close to abandonware at present. The
host doesn't respond to HTTP requests or pinging. The domain is
registered by Godaddy until December, but ownership details just show
Domains by Proxy. There is a Sourceforge project but it has no files and
there is an Android port too.

The sources for Windows, IOS and Linux can be found at

RXTX may be a Java class library, but there is evidently a healthy amount
of native code needed to interface the RxTx package to the underlying OS,
primarily because serial i/o is anything but standardised outside the
POSIX world.

I think your best bet may be to grab the source tarball from, see what documentation there is in the tarball
and then feed the Java source through javadocs.

It is possibly a bad sign that I couldn't find either a build.xml (for
Ant) or a Makefile (for the C sources) in the published file list. I have
no idea what, if any, C documentation tool, should be used: you might
like to try Cdoc since I wrote it to do sensible things if you point it
at vanilla C.

Good luck.

If he is using any of the new Windows (Vista, 7 or 8) I would forget
serial IO and use some sort of conversion device. I've used a couple
that interface through TCP/IP and I know there are USB to serial devices
available. If he is developing for XP then the old Sun javax.comm
package is the way to go. It works pretty well and didn't have the bugs
that RXTX had. The Sun software has been unsupported for years but I
know it still works just fine on XP.


Knute Johnson

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