You can set preferences that affect the appearance of the visual editor, the way the visual editor generates and parses Java code, and other preferences.
Customizing the appearance of the visual editor
You can control how and whether views and palettes are displayed in the visual editor.Making the visual editor the default Java editor
By default, Java classes are opened in a source code editor. You can make the visual editor the default Java editor.Specifying visual editor preferences for code generation
There are several code generation preferences that you can set for the visual editor.
Parent topic: About the visual editor for Java