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
I had the same issue, on windows 10 and eclipse, the probelm was i had java for 32 and 64 bits, so i installed RXTX library for 64 bits but eclipse was using the 32 bits java enviroment, so what i did was download RXTX for 32 bits copy the necessary files to C:ProgramFilesx86/JAVA_HOME as in the instructions for RXTX and the problem was solved. Hope this helps anyone.