Embedding Java applets in a Google Sites website

Question

I am trying to run some Java code I wrote in a Google Site I have created. I know there's an issue with this but I tried both of the following options:

1. Using the Code Wrapper gadget as described here: http://web.michaelchughes.com/how-to/embed-java-applets-in-google-sites. I used the Code Wrapper gadget from the following URL: http://hosting.gmodules.com/ig/gadgets/file/105629041657992777031/code-wrapper.xml with the following Javascript code:

   <script type="text/javascript" src="http://www.java.com/js/deployJava.js"></script>
   
   <script type="text/javascript">
       /* <![CDATA[ */
           var attributes = {
               code: 'com.fusego.wimbeep.applet.ScreamURLApplet.class',
               archive: 'http://sites.google.com/site/wimbeep/technology/wimbeeptools.jar',
               width: 500,
               height: 100
           };
             var parameters = { };
             var version = '1.6';
             deployJava.runApplet(attributes, parameters, version);
       /* ]]> */
   </script>   
   

This does not work - I open a debug console in my Firefox browser and I see that deployJava is undefined.

1. Using the Embed Gadget with tags:

   <_applet archive="http://sites.google.com/site/wimbeep/technology/wimbeeptools.jar" code="com.fusego.wimbeep.applet.ScreamURLApplet.class" height="400" width="400"/>

This does not work - I see that the JRE starts but there's an error and the console reports the following:

load: class com.fusego.wimbeep.applet.ScreamURLApplet.class not found.
java.lang.ClassNotFoundException: com.fusego.wimbeep.applet.ScreamURLApplet.class
    at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
    at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
    at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
    at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
    at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
    at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Exception: java.lang.ClassNotFoundException: com.fusego.wimbeep.applet.ScreamURLApplet.class

This is really frustrating. I tried many combination, with and without the .class postfix in the code attribute, it just doesn't work. Any ideas?

Answer 1

I had encountered a similar problem, and I chose the simple expedient of hosting the applet on another site with an ordinary link posted on sites.google.com. Alternatively, this thread suggests loading the applet via java-web-start, citing this example.

Addendum: This (somewhat more transparent) example illustrates several approaches.

• Java Web Start
• JWS Applet
• Traditional Applet
• Downloadable JAR with Manifest