Could not create java socket in compiled exe.

Hi all, I am following the article below to use java socket in my matlab application. http://www.mathworks.com/matlabcentral/fileexchange/21131

It works fine when running under matlab. But gave this error if I compile it to a console exe by deployment project.

Error using test_socket (line 69)
Connection Error: Undefined function 'ServerSocket' for input arguments of type 'double'.

MATLAB:UndefinedFunction

Regards,

zlf