The following navigation, activation and selection keyboard bindings on JComboBox need verification for proper operation and key binding sequences.

JComboBox
Navigate in - Tab
Navigate out - Tab, Shift+Tab (reverses direction)
Post menu - Alt+Down arrow, down arrow, Spacebar
Unpost menu - Esc
Navigate within list - Arrow keys
Select from list - Enter
Cycle thru entries without posting menu - Up/Down Arrow Keys