Hi ad1054,
Are you sure you have java 1.6 and if so, how did you get it? I believe the latest version available from apple is 1.5.0_06. Java 1.6 was only just released by Sun, and, if I'm not mistaken, only for PC and Linux. Apple may be waiting to force people to pay for Leopard to get Java 1.6. (Though you can get a beta version from developer.apple.com.) As Hawaiian_Starman mentioned above, you can
check your java version.
That said, you don't have to worry about
lower versions of Java because Java is backwards compatible. In fact, if you use Firefox (sorry, but I just checked it in Safari, and got a blank page so I guess Safari, like IE, doesn't support this) and go to "about:plugins" you will see something like
<pre>
Java Embedding Plugin 0.9.5
g2
File name: MRJPlugin.plugin
Runs Java applets using the latest installed versions of Java. For more information:
Java Embedding Plugin. Run version test: Test Your
JVM.
MIME Type Description Suffixes Enabled
application/x-java-vm Embedded JVM xjv Yes
application/x-java-applet Embedded Java Applet xja Yes
application/x-java-applet;version=1.1 Embedded Java Applet xja11 Yes
application/x-java-applet;version=1.1.1 Embedded Java Applet xja111 Yes
application/x-java-applet;version=1.1.2 Embedded Java Applet xja112 Yes
application/x-java-applet;version=1.1.3 Embedded Java Applet xja113 Yes
application/x-java-applet;version=1.2 Embedded Java Applet xja12 Yes
application/x-java-applet;version=1.2.1 Embedded Java Applet xja121 Yes
application/x-java-applet;version=1.2.2 Embedded Java Applet xja122 Yes
application/x-java-applet;version=1.3 Embedded Java Applet xja13 Yes
application/x-java-applet;version=1.3.1 Embedded Java Applet xja131 Yes
application/x-java-applet;version=1.4 Embedded Java Applet xja14 Yes
application/x-java-applet;version=1.4.1 Embedded Java Applet xja141 Yes
application/x-java-applet;version=1.4.2 Embedded Java Applet xja142 Yes
application/x-java-applet;version=1.5 Embedded Java Applet xja15 Yes
</pre>
You can see from this list that all versions up to and including the currently installed one are supported. The only thing you have to fear is that the applet you are trying to use was compiled with Java 1.6 and is not itself backwards compatible. However, when I made a test applet of this type, I got a red X, and no coffee cup.
If you see the red X, and I think the coffee cup as well, you should be able to right-click (or ctrl-click) the icon. If so, this will give you a menu with "console" and "about" choices. "About" will give you the version of Java you have, and "console" is supposed to show you the errors that kept the applet from working. (However, with my Java 1.6 test, the console was empty.)
I hope this helps.
1.5GB, 2.16 GHz Core Duo, 15.4" Macbook Pro Mac OS X (10.4.8)