How to use javax.swing

void updateFontSelector () {
  final boolean useFile = fontFileRadio.isSelected();
  fontList.setEnabled(!useFile);
  fontFileText.setEnabled(useFile);
  browseButton.setEnabled(useFile);
}

public void showContent (boolean visible) {
  contentPanel.setVisible(visible);
  advancedPanel.setVisible(visible && advancedButton.isSelected());
  advancedButton.setVisible(visible && hasAdvanced);
  descriptionLabel.setText(visible ? description : "");
}

  private void showUrlDialog() {
    JTextArea urlArea = new JTextArea("Can't open browser. Please browse to:\n" + url);
    JOptionPane.showMessageDialog(null, urlArea);
  }
}

private void setup() {
 setLayout(new BorderLayout());
 JPanel bot = new JPanel();
 add(jt.getTableHeader(), BorderLayout.NORTH);
 bot.setLayout(new BorderLayout());
 bot.add(del, BorderLayout.EAST);
 add(bot, BorderLayout.SOUTH);
 JScrollPane jsp = new JScrollPane(jt);
 jsp.setPreferredSize(new Dimension(500, 250));
 add(jsp, BorderLayout.CENTER);
 del.addActionListener(new DListener());
 JRootPane rootPane = SwingUtilities.getRootPane(del);
 rootPane.setDefaultButton(del);
 setVisible(true);
}

void setEdgesVisible (boolean visible) {
  edgesCheckbox.setVisible(visible);
  edgesLabel.setVisible(visible);
  visible = visible && edgesCheckbox.isSelected();
  sideCombo.setVisible(visible);
  sideLabel.setVisible(visible);
}

public static void addKeyBinding(JComponent comp, KeyStroke key, String id, Action action) {
  comp.getInputMap().put(key, id);
  comp.getActionMap().put(id, action);
}

  @Override
  public void setVisible(boolean aFlag) {
    super.setVisible(aFlag);
    if (aFlag) {
      timer.start();
    } else {
      timer.stop();
    }
  }
}

  public void actionPerformed (ActionEvent evt) {
    sampleTextPane.setText(NEHE_CHARS);
    resetCacheButton.doClick();
  }
});

void setEdgesVisible (boolean visible)
{
  edgesCheckbox.setVisible(visible);
  edgesLabel.setVisible(visible);
}

void setSidesVisible(boolean visible)
{
  sideCombo.setVisible(visible);
  sideLabel.setVisible(visible);
}

public void setValue (T value) {
  this.value = value;
  activeButton.setVisible(value == null ? false : !isAlwaysActive);
  removeButton.setVisible(isRemovable);
}

  public void run () {
    JComponent focusComponent = component;
    if (focusComponent instanceof JSpinner)
      focusComponent = ((JSpinner.DefaultEditor)((JSpinner)component).getEditor()).getTextField();
    focusComponent.requestFocusInWindow();
  }
});

public void showContent (boolean visible) {
  contentPanel.setVisible(visible);
  advancedPanel.setVisible(visible && advancedButton.isSelected());
  advancedButton.setVisible(visible && hasAdvanced);
  descriptionLabel.setText(visible ? description : "");
}

void updateFontSelector () {
  final boolean useFile = fontFileRadio.isSelected();
  fontList.setEnabled(!useFile);
  fontFileText.setEnabled(useFile);
  browseButton.setEnabled(useFile);
}

void setEdgesVisible (boolean visible) {
  edgesCheckbox.setVisible(visible);
  edgesLabel.setVisible(visible);
  visible = visible && edgesCheckbox.isSelected();
  sideCombo.setVisible(visible);
  sideLabel.setVisible(visible);
}

  public void actionPerformed (ActionEvent evt) {
    sampleTextPane.setText(NEHE_CHARS);
    resetCacheButton.doClick();
  }
});

void setSidesVisible(boolean visible)
{
  sideCombo.setVisible(visible);
  sideLabel.setVisible(visible);
}

  public void run () {
    JComponent focusComponent = component;
    if (focusComponent instanceof JSpinner)
      focusComponent = ((JSpinner.DefaultEditor)((JSpinner)component).getEditor()).getTextField();
    focusComponent.requestFocusInWindow();
  }
});

  public void actionPerformed (ActionEvent evt) {
    sampleTextPane.setText(EXTENDED_CHARS);
    resetCacheButton.doClick();
  }
});

  public void actionPerformed (ActionEvent evt) {
    sampleTextPane.setText(EXTENDED_CHARS);
    resetCacheButton.doClick();
  }
});