I have a classes directory \"JNA\" contains follwing .class files :
MClass.class
SClass$SC_PROC.class
SClass$S_PROC.class
SClass.class
and
I read lot in order to make it run but, nothing could help,
(Somebody said it is the known bug in eclipse)
So I just,
NetBeans IDE
(I am using version 8.0),Libraries
folderbin
folder containing all required .dll
to PATH
environmental variableand yay... :) It worked...