You can use the visual editor to visually compose and preview Java classes using Standard Widget Toolkit (SWT), Swing, and AWT components.
The following Web sites provide more information about Java, SWT, the Eclipse Rich Client Platform, and Swing:
Using the visual editor, you can add Java beans, or components, from different palettes, manipulate them in the Design view and Java Beans view, and edit the properties in the Properties view. The visual editor also includes a Source view where you can see and modify the generated Java code. You can make changes in either the Source view or in the Design view.