Re: FlowLayout and lightweight IDEs

"John B. Matthews" <nospam@nospam.invalid>
Mon, 18 Aug 2008 00:50:53 -0400
In article
 bH <> wrote:

This is the corrected program fixing the errors that I questioned
about above. It is no longer quirky.

Thank you for following up. Your program is much improved, although I
confess I changed the pink Canvas to a light gray and added a call to
clearRect() in paint(). Although FlowLayout is reliable, I hope you have
a chance to experiment with alternative layouts.

Inspired by your program, I offer another Google application: the

import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.border.*;

 * @author John B. Matthews
public class GoogleOlympiad
  extends JPanel implements ActionListener {

  private static final String prefix =
  private static final Border border =
    BorderFactory.createMatteBorder(4, 16, 4, 16, Color.lightGray);
  private static final Cursor defaultCursor =
    new Cursor(Cursor.DEFAULT_CURSOR);
  private static final Cursor waitCursor =
    new Cursor(Cursor.WAIT_CURSOR);

  private ArrayList<String> list = new ArrayList<String>();
  private JLabel imageLabel = new JLabel();
  private JButton quitButton = new JButton();
  private ImageIcon image = new ImageIcon();
  private JComboBox favorites;

  public GoogleOlympiad() {
    this.setLayout(new BorderLayout());


    JLabel titleLabel = new JLabel();
    titleLabel.setText("The Google Olympiad");
    titleLabel.setFont(new Font("SansSerif", Font.BOLD, 24));
    this.add(titleLabel, BorderLayout.NORTH);

    imageLabel.setText("Select an image from the list below.");
    this.add(imageLabel, BorderLayout.CENTER);

    favorites = new JComboBox(
      list.toArray(new String[list.size()]));


    JPanel controlPanel = new JPanel();
    this.add(controlPanel, BorderLayout.SOUTH);

  public void actionPerformed(ActionEvent ae) {
    String cmd = ae.getActionCommand();
    if ("favs".equals(cmd)) {
      int index = favorites.getSelectedIndex();
    if ("quit".equals(cmd)) {

  private ImageIcon getImage(int index) {
    try {
      image = new ImageIcon(new URL(prefix + list.get(index)));
    } catch (MalformedURLException e) {
    if (image.getImageLoadStatus() == MediaTracker.COMPLETE) {
    } else {
      imageLabel.setText("Image not available.");
    return image;

  public static void main(String[] args) {
    EventQueue.invokeLater(new Runnable() {
      public void run() {
        JFrame frame = new JFrame();
        frame.add(new GoogleOlympiad());
        frame.setTitle("Google Olympiad");
        frame.setSize(400, 300);
[Yes, I know curling is not featured!]
John B. Matthews
trashgod at gmail dot com
home dot woh dot rr dot com slash jbmatthews

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