Keystrokes for button actions in JOptionPane

Question

When running my app in Windows, the Alt key must be pressed to cause the "Yes" button or "No" button to respond from the keyboard. Can I set an option in JOptionPane, or elsewhere, to not require pressing the Alt key to activate a button in JOptionPane?

Answer 1

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
* Class JPSOptionPane
* @author Sreenivasa Reddy M
* @version 1.0
public class JPSOptionPane {
private static boolean isKeyPressed;
private static Object selectedValue;
* Method showOptionDialog
* @param parentComponent
* @param message
* @param title
* @param optionType
* @param messageType
* @param icon
* @param options
* @param initialValue
* @return
public static int showOptionDialog (Component parentComponent,
Object message, String title,
int optionType, int messageType,
Icon icon, Object [] options,
Object initialValue) {
JOptionPane pane = new JOptionPane (message, messageType, optionType,icon, options, initialValue);
pane.setInitialValue (initialValue);
HashSet hash1 = new HashSet ();
hash1.add (AWTKeyStroke.getAWTKeyStroke (KeyEvent.VK_UP, 0,true));
hash1.add (AWTKeyStroke.getAWTKeyStroke (KeyEvent.VK_TAB, 0,true));
pane.setFocusTraversalKeys (KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,hash1);
HashSet hash2 = new HashSet ();
hash2.add (AWTKeyStroke.getAWTKeyStroke (KeyEvent.VK_TAB, 1, true));
hash2.add (AWTKeyStroke.getAWTKeyStroke (KeyEvent.VK_DOWN, 0, true));
final JDialog dialog = pane.createDialog (parentComponent, title);
pane.setFocusTraversalKeys (KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, hash2);
ActionListener yActionLis=new ActionListener(){
public void actionPerformed(ActionEvent e){
isKeyPressed=true;
dialog.dispose();
selectedValue=new Integer(0);
KeyStroke ks_y=KeyStroke.getKeyStroke(KeyEvent.VK_Y,8,true);
pane.registerKeyboardAction(yActionLis,ks_y,JComponent.WHEN_IN_FOCUSED_WINDOW);
          ActionListener nActionLis=new ActionListener(){
public void actionPerformed(ActionEvent e){
isKeyPressed=true;
dialog.dispose();
selectedValue=new Integer(1);
KeyStroke ks_n=KeyStroke.getKeyStroke(KeyEvent.VK_N,8,true);
pane.registerKeyboardAction(nActionLis,ks_n,JComponent.WHEN_IN_FOCUSED_WINDOW);
pane.selectInitialValue();
dialog.show ();
if(!isKeyPressed){
dialog.dispose ();
selectedValue = pane.getValue();
          isKeyPressed=false;
else{
          isKeyPressed=false;
return ((Integer) selectedValue).intValue ();
if (selectedValue == null) {
return JOptionPane.CLOSED_OPTION;
if (options == null) {
if (selectedValue instanceof Integer) {
return ((Integer) selectedValue).intValue ();
return JOptionPane.CLOSED_OPTION;
for (int counter = 0, maxCounter = options.length; counter < maxCounter; counter++) {
if (options [counter].equals (selectedValue)) {
return counter;
return JOptionPane.CLOSED_OPTION;
* Method showInputDialog
* @param parentComponent
* @param message
* @param title
* @param messageType
* @param icon
* @param selectionValues
* @param initialSelectionValue
* @return
* @throws HeadlessException
public static Object showInputDialog (Component parentComponent,
Object message, String title,
int messageType, Icon icon,
Object [] selectionValues,
Object initialSelectionValue)
throws HeadlessException {
JOptionPane pane = new JOptionPane (message, messageType,JOptionPane.OK_CANCEL_OPTION,
icon, null, null);
HashSet hash1 = new HashSet ();
hash1.add (AWTKeyStroke.getAWTKeyStroke(KeyEvent.VK_UP,0,true));
pane.setFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, hash1);
HashSet hash2 = new HashSet ();
hash2.add(AWTKeyStroke.getAWTKeyStroke (KeyEvent.VK_DOWN, 0,true));
pane.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, hash2);
pane.setWantsInput (true);
pane.setSelectionValues (selectionValues);
pane.setInitialSelectionValue (initialSelectionValue);
JDialog dialog = pane.createDialog (parentComponent, title);
pane.selectInitialValue();
dialog.show();
dialog.dispose();
Object value = pane.getInputValue();
if (value == JOptionPane.UNINITIALIZED_VALUE){
return null;
return value;
public static void showMessageDialog(Component parentComponent,
Object message)
throws HeadlessException{
JOptionPane.showMessageDialog(parentComponent,message);
public static void showMessageDialog(Component parentComponent,
Object message,
String title,
int messageType)
throws HeadlessException{
JOptionPane.showMessageDialog(parentComponent,message,title,
messageType);
public static void showMessageDialog(Component parentComponent,
Object message,
String title,
int messageType,
Icon icon)
throws HeadlessException{
JOptionPane.showMessageDialog(parentComponent,message,title,
messageType,icon);