Iv downloaded and installed RXTX library:
-put files into java folder.
-used eclipse / project / properties / java build path ...
-also did the: eclipse / help / install new software...

But when i add:

import gnu.io.*;

... and run any example code, the classes are red lines. i guess... cant be found in gnu.io.

also when i leave cursor after gnu.io[] and hit ctrl space the tooltips wont show with different class content.

Thank you in advance!