Matlab doesn't import my java classes

Hi,

i want to import some java classes. I set the dynamic path

javaclasspath({path_1, path_2})

where path_1 and path_2 are the paths of two .jar files C:\Jfunction\myfirst C:\Jfunction\mysecond

The second jar contains the following folders

fold > subfold > subfold2 > myclass.class

then

import fold.subfold.subfold2.*

but when i do

Obj=folder.subfolder.subfolder2.myclass ();

it says something like

"Undefined class folder.subfolder.subfolder2.myclass"

I know that some people who use this code haven't this problem and everything works properly.

What is the problem? Thanks!