The Application So Far
At this point you can execute your application and actually see some data! Rebuild your project and execute it. You will see the contact information displayed in a tree in the left hand side. The form looks like this:
Note the following about the form at this early stage:
No phone numbers are displayed. Phone number information is added to the tree in an exercise at the end of this part of the tutorial.
Clicking on a contact in the tree does not yet cause its information to be displayed in the editor pane on the right hand side of the GUI.
None of the buttons on the editor panes function.
The remainder of the tutorial provides instructions for adding this functionality.