import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.KeyEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
public class MnemonicSample {
public static void main(String args[]) {
JFrame frame = new JFrame("Mnemonics");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Container content = frame.getContentPane();
content.setLayout(new GridLayout(1, 0));
JButton button1 = new JButton("Warning");
button1.setMnemonic(KeyEvent.VK_W);
content.add(button1);
JButton button2 = new JButton("Warning");
button2.setMnemonic(KeyEvent.VK_H);
content.add(button2);
frame.setSize(300, 200);
frame.setVisible(true);
}
}