The applet is not being displayed, but rather I see an "load: class UshopInputStandard not found" error in my browser's status bar.
I have made sure that all of the required class files are in the proper directory and all of them are referenced the same.
I see that by going directly to the URL of your class:
The following error is displayed:
The specified CGI application misbehaved by not returning a complete set of HTTP headers.
I've never seen that "CGI Error" associated with a Java class file before... but it sounds like your server is trying to execute that class file for some reason. I would suggest making sure that your class files only have READ permission... and NOT EXECUTE permission.