JBossDeveloper

CS.Main class is the next one:

public static void main(String[] args) {
 LOGIN l = new LOGIN();
 l.setVisible(true);
}

'LOGIN' is a class which has a Swing interface and there are a commandButton called 'btAceptar'. When we push this button the program execute the btAceptarActionPerformed event.

This event call to a function in other package (the code I write before).

All I explain here is the client side....

When the event is executing we pass all the invokes to the server side.

Answering to your question CS.Main class is rendering that UI.