A DESCRIPTION OF THE REQUEST :
javax.swing.colorchooser contains SmartGridLayout and CenterLayout

SmartGridLayout in particular might have broader appeal for the AWT/Swing development commuity than just implementing color choosers.

Please consider making them public.

JUSTIFICATION :
AWT/Swing provides a number of different layout managers. To discover an undocumented "better GridLayout class" would seem to indicate that the original GridLayout is somehow 'dumb'.

Often grid layout isn't quite right as far as sizing. Why not provide an additional alternative?

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Refactor classes into java.awt or javax.swing
ACTUAL -
N/A Classes not publicly available

CUSTOMER SUBMITTED WORKAROUND :
Use GridBagLayout for desired layout, increased complexity