I read the javax.comm api and noticed that it is supported for Sun and Linux but not for windows. is there a standard way for Windows also? I would like to build a simle app that communicates with external handmade device via parallel port.
Yes, Sun gave up on Windows for its communications API. You should use rxtx (http://users.frii.com/jarvi/rxtx/ and http://rxtx.qbang.org/wiki/index.php/Download) if you want to connect to serial or parallel ports in Window