How to make JRadioButtons change properties (JFrame)?

How can I make my JRadioButton enable/di开发者_开发知识库sable a JComboBox in JFrame?

if(radioButton.isSelected())
{
   combo.setEnabled(true);
}
else
{
   combo.setEnabled(false);
}

EDIT: Put this code in your event handler of JRadioButton