Check box and radio button - hover and focus states

1. Should radio buttons have a hover state?
2. What is the main difference between a radio button and check box?
3. Which method returns the state of the checkbox or radio button?

Should radio buttons have a hover state?

Adding a hover effect to your checkboxes and radio buttons solves the problem of small click targets. By letting users know that they can click the label, you save users time and energy when they're using your application.

What is the main difference between a radio button and check box?

Checkboxes and radio buttons are elements for making selections. Checkboxes allow the user to choose items from a fixed number of alternatives, while radio buttons allow the user to choose exactly one item from a list of several predefined alternatives.

Which method returns the state of the checkbox or radio button?

actionPerformed() simply reads the state of the various buttons.