The JToolbar.add(Action) behaviour is wrong. (Label/Icon display).

When an Action is added to the JToolBar its Icon property is used to
create toolbar buttons. The NAME property is ignored. But subsequently, when
the NAME property of the Action is set, the corresponding toolbar button now
shows the NAME string along with the original Icon.

I want to reiterate that the api to control wheather the Label and/or Icons are displayed should be on the JToolBar class and while adding the Actions or changing the properties of that Action the setting on the JToolBar instance should be consulted.