Short cut for Radio buttons (using Ctrl+ key)

Question

How can I select deselect Radio buttons using Ctrl + keys. I know that setMnemonic can be used to access using Alt + key. But I want to use Ctrl also. Please suggest the solution. How can I select using only single key?

Answer 1

Read the API for a meaning of each of the arguments. Here is a simple example showing how to assign an "Action" to the Ctrl+1 and Ctrl+2 keys:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class KeyboardAction extends JFrame
    public KeyboardAction()
        JPanel panel = new JPanel();
        setContentPane( panel );
        JTextField textField1 = new JTextField("Ctrl+1 or Ctrl+2", 10);
        panel.add( textField1 );
        JTextField textField2 = new JTextField("Ctrl+2", 10);
        panel.add( textField2 );
        //  Change the input map of the text field,
        //  therefore, Ctrl+1 only works for the first text field
        Action action1 = new SimpleAction("1");
        Object key1 = action1.getValue(Action.NAME);
        KeyStroke ks1 = KeyStroke.getKeyStroke(KeyEvent.VK_1, KeyEvent.CTRL_MASK);
        textField1.getInputMap().put(ks1, key1);
        textField1.getActionMap().put(key1, action1);
        //  Change the input map of the panel
        //  therefore, Ctrl+2 works for both text fields added to the panel
        Action action2 = new SimpleAction("2");
        Object key2 = action2.getValue(Action.NAME);
        KeyStroke ks2 = KeyStroke.getKeyStroke(KeyEvent.VK_2, KeyEvent.CTRL_MASK);
        panel.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(ks2, key2);
        panel.getActionMap().put(key2, action2);
    class SimpleAction extends AbstractAction
        public SimpleAction(String name)
            putValue( Action.NAME, "Action " + name );
        public void actionPerformed(ActionEvent e)
            System.out.println( getValue( Action.NAME ) );
    public static void main(String[] args)
        KeyboardAction frame = new KeyboardAction();
        frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
        frame.pack();
        frame.setVisible(true);
}Also, if you search the forum using the keyword "getActionMap", I'm sure you'll find other example.