>>>>> "Amir" == Amir Bukhari <ufz6@rz.uni-karlsruhe.de> writes: Amir> Here is a simple program which use Constructor.newInstance. it work as it Amir> expected in both JVM and GCJ (executable file) Thanks. I don't know what to tell you at this point other than you could try to get a -g build and see if you can debug the problem (we could help you with this to some degree). Tom