PATH Documentation > WebObjects 4.5 > Creating a Java Client Application: A Tutorial

Testing the Interface

With your current interface you can test-run your application in Interface Builder and try inserting and deleting some Studio objects.

Test your interface.
Choose Document Test Interface (File Test Interface on Windows NT).

You will find that you cannot save your changes to the database. The save fails because the File's Owner object (an instance of a custom subclass of EOInterfaceController) is created on the client side when the application is started. No Yellow Box object corresponding to the File's Owner is available during testing. If you had any custom code, Interface Builder would also have no way to test it. To test the save function or any custom code, you must build the project and then run the application.