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How can we set Mnemonic Key Radio Button in Java?
Mnemonic key is set so that a user can use Keyboard keys to select a Radio Button. For example, a key can be set with ALT −
radio2.setMnemonic(KeyEvent.VK_R);
Above, we have set key ALT+R for radio2.
The following is an example to set Mnemonic key radio button −
package my;
import java.awt.FlowLayout;
import java.awt.event.KeyEvent;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JRadioButton;
public class SwingDemo {
public static void main(String[] args) {
JRadioButton radio1 = new JRadioButton("Male");
JRadioButton radio2 = new JRadioButton("Female");
radio2.setMnemonic(KeyEvent.VK_R);
ButtonGroup group = new ButtonGroup();
group.add(radio1);
group.add(radio2);
radio1.setSelected(true);
JFrame frame = new JFrame();
frame.setLayout(new FlowLayout());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new JLabel("Select Gender:"));
frame.add(radio1);
frame.add(radio2);
frame.pack();
frame.setVisible(true);
}
}The output is as follows. When you will press Alt+R, you will be able to select the radio buttons.
Output
Updated on: 30-Jul-2019
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