How do i trigger a button using keyboardstrokes

Question

hello,
im trying to trigger my button using keyboard strokes. For example pressing ALT + S would trigger my addbutton.
and like A would trigger my exit. I tried using some keylisteners to my Jbuttons but cant seem to get it to work.
Am i heading in the right direction using keylisteners to try to activate my buttons or should i be using some else?
Any tips on how to use keyboardstrikes to trigger my buttons would be much appreciated.
this is some of my code. i excluded some parts such as my JLIST
if you would rather see the whole code let me know
public class Class
         public static void main(String[] args)
             JFrame frame = new FutureValueFrame();
             frame.setVisible(true);
     class FutureValueFrame extends JFrame
         public FutureValueFrame()
             setTitle("Task assignment");
             setResizable(false);
             setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
             JPanel panel = new FutureValuePanel();
             this.add(panel);
             this.pack();
             centerWindow(this);
         private void centerWindow(Window w)
             Toolkit tk = Toolkit.getDefaultToolkit();
             Dimension d = tk.getScreenSize();
             setLocation((d.width-w.getWidth())/2, (d.height-w.getHeight())/2);
class FutureValuePanel extends JPanel implements ActionListener,KeyListener
         private JButton   
                             addButton,
                             exitButton,
                             assignButton,
                             reportButton,
                             deleteButton;
         public FutureValuePanel()
   JPanel comboBoxButtonPanel = new JPanel();
             comboBoxButtonPanel.setLayout(new GridBagLayout());
assignButton = new JButton("Assign");
             addButton=new JButton("Add");
             addButton.addActionListener(this);
             addButton.addKeyListener(this);
             comboBoxButtonPanel.add(addButton, getConstraints(0,4,1,1, GridBagConstraints.WEST));
             exitButton=new JButton("Exit");
             exitButton.addActionListener(this);
             exitButton.addKeyListener(this);
             comboBoxButtonPanel.add( exitButton, getConstraints(0,6,1,1, GridBagConstraints.WEST));
             add(comboBoxButtonPanel,getConstraints(2,0,1,1, GridBagConstraints.WEST));
private GridBagConstraints getConstraints(int gridx, int gridy,
         int gridwidth, int gridheight, int anchor)
             GridBagConstraints c = new GridBagConstraints();
             c.insets = new Insets(5, 5, 5, 5);
             c.ipadx = 5;
             c.gridx = gridx;
             c.gridy = gridy;
             c.gridwidth = gridwidth;
             c.gridheight = gridheight;
             c.anchor = anchor;
             return c;
  public void actionPerformed(ActionEvent e)
             Object source = e.getSource();
             if (source == exitButton)
                 System.exit(0);
             else if (source == addButton)
                  Object[] options = {"Employee",
                "Project"};
                  int n = JOptionPane.showOptionDialog(null,
                            "Add a new Employee Project?",
                            "Add Record",
                                 JOptionPane.YES_NO_OPTION,
                                 JOptionPane.QUESTION_MESSAGE,
                                 null,    
                                 options, 
                                 options[0]);
                  if (n == JOptionPane.YES_OPTION)
                       String k;
                       k=  JOptionPane.showInputDialog("Enter the name of the employee(name cant be duplicated).");
                       JOptionPane.showMessageDialog(null,k+" has been sucessfully added");
                       employeeListModel.addElement(k);
                   if (n==JOptionPane.NO_OPTION)
                         String j;
                        j=  JOptionPane.showInputDialog("Enter the name of the project(name cant be duplicated).");
                        JOptionPane.showMessageDialog(null,j+" has been sucessfully added");
                        projectListModel.addElement(j);

Answer 1

thank u so much. I put Mnemonics on nearly all my Jbuttons but when i press a key. It does not trigger the actionPerformed event.
i changed my code to this
i still have issues when pressing e the gui does not close.
any tips on how to fix this?
exitButton=new JButton("Exit");
            exitButton.setMnemonic(KeyEvent.VK_E);
             exitButton.addActionListener(this);
         public void actionPerformed(ActionEvent e)
             Object source = e.getSource();
             if (source == exitButton)
                 System.exit(0);