2 radio button groups

[Duane Evenson]

I would like to have a set of JRadioButtonMenuItem's and JRadioButtons
referring to the same group. Selecting the "red" radio button in the
menu will also set the "red" radio button on the panel. How do I go
about referring two or more radio buttons to the same group element.
All I can figure is having two groups, two listeners, and each listener
copy its changed group model to the other group.
Is there a more elegant solution?

 

[Vova Reznik]

I would like to have a set of JRadioButtonMenuItem's and JRadioButtons
referring to the same group. Selecting the "red" radio button in the
menu will also set the "red" radio button on the panel. How do I go
about referring two or more radio buttons to the same group element.
All I can figure is having two groups, two listeners, and each listener
copy its changed group model to the other group.
Is there a more elegant solution?

You may share ButtonModel:
redRadioButtonMenu.setModel(redRadioButton.getModel());
and add to a button group only one button from pair menu:button