This page displays applets that can be run by Java versions 1.0 through
1.7, plus Swing (9 applets in all). You should see a colorful display for each
of these applets below. A grey or empty square indicates that your version of Java needs to be upgraded.
If you don't see anything below this paragraph, or all the squares are a uniform gray, either you don't have any version of Java, or (more likely) your browser is "protecting" you from running applets. Tweaking your security settings may help.