Using RXTX In NetBeans

From Rxtx

 Under Netbeans 5.5 on Windows, I needed to right-click Libraries
under Projects on the left hand side of the screen, and select Add JAR/Folder, picking the RXTXcomm.jar file.
 Only then did my "import gnu.io.*;" become a valid command.  Also, I got a run-time error where it failed to
load the rxtxSerial.DLL library because it couldn't find it.  I needed to right-click the project name, select
properties, select Run under categories, and ...

add a VM Options: entry of -Djava.library.path="C:/where-ever-you-stuck-rxtxSerial.DLL-file;%PATH%" While I'm sure there is more than one way of adding the directory to your path, this worked for me. Note I did the default NetBeans 5.5/JDK 1.6.0 isntall accepting all the default options(ie clicking next until I got to finish), so I haven't modified my java paths or anything.

make sure you type "import gnu.io.*"