How to implement auto complete using swings?

Question

Hi all ,
i have got a new assignment where I have to implement auto complete. Please suggest me the possible ways to do so. I am working on desktop application.
Please help.
Thanks
Alex

Answer 1

Till now i have tried this:-
public class AutoCompletePer extends JFrame
     private JTextField field = new JTextField(40);
     private JFrame frame1 = new JFrame();
     private boolean showAutoComplete = true;
     public AutoCompletePer()
          setSize(500,300);
          setLocation(300,50);
          setLayout(new FlowLayout());
          getContentPane().add(field);
          setVisible(true);
          setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
          addListeners();
     private void addListeners()
           field.getDocument().addDocumentListener(new DocumentListener() {
            public void removeUpdate(DocumentEvent e)
           public void insertUpdate(DocumentEvent e)
                 if(showAutoComplete)
                      SwingUtilities.invokeLater(new Runnable() {
                    public void run()      {
                    Point p = field.getLocationOnScreen();
                       frame1.setBackground(Color.white);
                    frame1.setSize(field.getWidth(), 200);
                    frame1.setLocation(p.x ,p.y+20);
                    frame1.setVisible(true);
                    frame1.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
                    JPanel panel = new JPanel(new BorderLayout());
                    panel.setBackground(Color.WHITE);
                    panel.add(new JLabel("i am label"));
                    frame1.getContentPane().add(panel,BorderLayout.CENTER);
                    showAutoComplete = false;
                    requestFocus();
                    field.requestFocus();
                      public void changedUpdate(DocumentEvent e) {
     public static void main(String[] args) {
          new AutoCompletePer();
}I tried this but it doesn't work atleast frame should remain infront of the main window, even I tried with dialog box but all in vain.
Please suggest if there is any API defined for this in Java or any other wayOut.
Please help.
Alex