GUI Builder makes creating a tabbed pane simple. From the menu bar on the main GUI Builder window, select File --> New File.
From the menu bar on the GUI Builder File window, click
the Insert Tabbed Pane icon 
to display a panel builder where you can insert the
components for your tabbed pane. In the following example, two components
are added.
Figure 1: Creating a Tabbed Pane in GUI Builder 
After you create the tabbed pane, click the Preview tool
button 
to preview it.
Figure 2: Previewing the Tabbed Pane with GUI Builder 