Is there an element in Java (i.e. Swing/AWT or SWT) that is equivalent to the HTML element fieldset?
fieldset
If you are using SWT than I think that org.eclipse.swt.widgets.Group is what you are looking for. It is a Composite (a block in HTML analogy) and it looks like a fieldset in HTML.
org.eclipse.swt.widgets.Group
Composite
I can't speak for AWT and SWING however.