Re: Frames and applets..

Question

I am new to java and want to know what is the hierarchy of
putting components such as windows , frames , applets etc on the
screen?? can I put an applet on a scroll pane or the other way round??
Is there any thumb rule to design / know which component will contain the other one??
I am confused with the hierarchy given in the Java HTML DOC in my system.
Regards
Ayusman.

Answer 1

I am confused with the hierarchy given in the Java HTML DOC in my system.It is indeed a bit confusing when you first look at it. At the top level of it all is the
Window class; it's a top level, independent window as you know it when
you look at your screen. A Window is just a rectangular area on your screen.
First there was just AWT (Abstract Windowing Toolkit), but to confuse matters a
bit further, there's Swing too. As a rule of thumb all Swing thingies inherit from
their AWT counterparts and prepend a 'J' to their name.
A Frame (AWT) or JFrame extends a Window/JWindow and implements a top
level window with a border and a title bar (and possibly a toolbar and a menubar).
There's a third form of top level windows: the Dialog (AWT) or JDialog (Swing).
Inside those top level windows (which happen to extend the Container class),
many other Components or JComponents can be stored like Buttons or
JButtons etc. etc. etc.
As another rule of thumb: never mix the AWT components with Swing components.
When you get more familiar with those two systems you'll understand.
kind regards,
Jos