I am trying to use the 64 bit rxtx serial communication library (downloaded from cloudhopper) with 64bit windows 7 and eclipse. I get the message:
java.lang.Unsatisfi
Go to Project -> properties -> Java build path ->Find your .jar.
Click on + to open the JAR's properties.
Select Native library location and edit it to point to RXTX's shared library (.DLL, .so, .dylib).