> > Date: Sun, 10 Sep 2000 03:38:59 GMT > From: Iris Huang <[EMAIL PROTECTED]> > Subject: Java3D Demos > > Hello, > > I am a beginner of Java3D. When I tried to load a Java3D demo on my PC > (Windows98, 64MB memory), I got a problem. Every time the explorer stopped > at > "loading java applet...", > > and at the bottom of the browser, there was an error message: > error: javax/media/j3d/SceneGraphObject.. > > Does anybody know where is the problem? Thanks! > > --Iris This is because the Java3d demos really aren't ready to run as is. Why? I don't know, because a little better JavaScripting code in the HTML files should be able to fix this issue (to see how to do this, check out the book entitled "Ready-To-Run Java 3D" by Kirk Brown and Daniel Petersen - Wiley Publishing - ISBN 0-471-31702-0). Anyway, short of painstakingly hacking all of the demo HTML files, there is also a workaround to this issue (on Windows anyway) and that is that you'll need to run the "Java Plug-In Control Panel" found in Start->Settings->Control Panel (just look for the Duke icon). When you run this program, you'll see a page entitled "Java(TM) Plug-in Properties", and you'll want to choose the "Advanced" tab. On the top of this tab page, you'll see something called "Java Run Time Environment" which I'm guessing is set to "Use Java Plug-in Default", which is most likely the wrong plug-in. Choose the correct Plug-in by clicking on the drop-down. Here you'll typically see a few other choices, so pick the one that matches your JRE and Java3d combination, restart your browser, and it should just work. Note to the Java3d Demo Developers: I feel that the success or failure of a technology in general is dependent in large part on getting new potential developers hooked on learning the technology. Providing downloadable kits with demos of the techology which simply don't work as is without digging through obscure documentation to learn how to configure them are the quickest way to kill a technology (IMHO). Suggestion: either fix the HTML files which run the demos and be done with it or change the Java Plug-In Control Panel such that the most recently installed JRE becomes the default JRE in the list. After all, if someone goes to the trouble to download and install the most recent JRE, is to too much to expect that this new JRE will actually become the one which is used by their web browsers by default? Dave McLure p.s. You can't tell I stayed up too late going through this very same learning curve last night can you? :-). =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
