22.214.171.124 Draw Area
The Bean Builder screen is the area in which the developers can drag and drop the bean components and build their applications. The Screen consists of two panels.
The top panel called 'Draw area' is for visible bean components and the bottom panel in white, called 'Invisible Bean Area' is for invisible bean components.
Visible beans are visible in the screen and they have user interface. Invisible beans are represented by a rectangle in the screen and does not have an user interface.
The below picture shows the "Screen" view with visible components in the 'Draw area' and invisible component 'Combiner' in the 'Invisible bean area'.
Though the screen area is demarcated between visible and invisible beans the developers are at liberty to place the invisible components anywhere in the screen. When running the application or applet, only the visible beans are displayed. But if any of the visible components are placed in the bottom panel, it will not be displayed in the run time applet or application.
To summarize, in the compiled applet or application
Visible components placed in the top panel gets displayed while the invisible components are not.
Any component placed in the bottom panel is not displayed even though the component is a visible component.