/** Method declaration */
  private void initGUI() {

    Panel pQuery = new Panel();
    Panel pCommand = new Panel();

    pResult = new Panel();

    pQuery.setLayout(new BorderLayout());
    pCommand.setLayout(new BorderLayout());
    pResult.setLayout(new BorderLayout());

    Font fFont = new Font("Dialog", Font.PLAIN, 12);

    txtCommand = new TextArea(5, 40);

    txtCommand.addKeyListener(this);

    txtResult = new TextArea(20, 40);

    txtCommand.setFont(fFont);
    txtResult.setFont(new Font("Courier", Font.PLAIN, 12));

    butExecute = new Button("Execute");
    butClear = new Button("Clear");

    butExecute.addActionListener(this);
    butClear.addActionListener(this);
    pCommand.add("East", butExecute);
    pCommand.add("West", butClear);
    pCommand.add("Center", txtCommand);

    gResult = new Grid();

    setLayout(new BorderLayout());
    pResult.add("Center", gResult);
    pQuery.add("North", pCommand);
    pQuery.add("Center", pResult);
    fMain.add("Center", pQuery);

    tTree = new Tree();

    // (ulrivo): screen with less than 640 width
    Dimension d = Toolkit.getDefaultToolkit().getScreenSize();

    if (d.width >= 640) {
      tTree.setMinimumSize(new Dimension(200, 100));
    } else {
      tTree.setMinimumSize(new Dimension(80, 100));
    }

    gResult.setMinimumSize(new Dimension(200, 300));
    fMain.add("West", tTree);
    doLayout();
    fMain.pack();
  }