[Building Sakai] Running Java Applet from Resources

[Geng, Kelly]

Hi Dev list,

We had a faculty trying to run an Java Applet script from her Resources in Sakai. All the dependent class files are under the same directory as the launching html file. She got an "Incompatible magic value" error upon launching. Looking at the log it seems like everything went well up until the application started to connect our CAS server. I copied the log below(I red-highlighted our CAS server URL) and am wondering whether anyone has seen this before and know how to work around it. She claimed that the same script was running last semester (when we didn't have CAS and was on 2.7.x instead of current 2.8.x version of sakai).

Thanks,
Kelly
Miami University


network: Connecting https://niihka.muohio.edu/access/content/group/ffbe4f38-c9a5-46cd-9acb-b7d4a712f078/Modules/Module%20-%20Low%20level%20programming/simulation/NEWCPUSim.class with proxy=DIRECT
network: Connecting http://niihka.muohio.edu:443/ with proxy=DIRECT
...
security: Loading certificates from Deployment session certificate store
security: Loaded certificates from Deployment session certificate store
security: Checking if certificate is in Deployment denied certificate store
network: Connecting https://niihka.muohio.edu/access/content/group/ffbe4f38-c9a5-46cd-9acb-b7d4a712f078/Modules/Module%20-%20Low%20level%20programming/simulation/NEWCPUSim.class with cookie "__utma=40004414.470991547.1342969029.1348793119.1348840212.4; __utmz=40004414.1342969029.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); SaneID=134.53.7.196-1348498927383600; GB2TOKEN=9acaf8db--a9a9-eaff730025a9-43122cb01247e7684dd5c644872ba5bd; SESSID=OVZCMTIyNTkxOA=="
network: Server https://niihka.muohio.edu/access/content/group/ffbe4f38-c9a5-46cd-9acb-b7d4a712f078/Modules/Module%20-%20Low%20level%20programming/simulation/NEWCPUSim.class requesting to set-cookie with "JSESSIONID=eade0697-c823-454b-9c6a-bc93a97e.Niihka-03; Path=/; Secure; HttpOnly"
network: Cache entry not found [url: https://niihka.muohio.edu/sakai-login-tool/container, version: null]
network: Connecting https://niihka.muohio.edu/sakai-login-tool/container with proxy=DIRECT
network: Connecting http://niihka.muohio.edu:443/ with proxy=DIRECT
security: Loading certificates from Deployment session certificate store
security: Loaded certificates from Deployment session certificate store
security: Checking if certificate is in Deployment denied certificate store
network: Connecting https://niihka.muohio.edu/sakai-login-tool/container with cookie "__utma=40004414.470991547.1342969029.1348793119.1348840212.4; __utmz=40004414.1342969029.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); SaneID=134.53.7.196-1348497383600; GB2TOKEN=9acaf8db-4b95-a9a9-eaff730025a9-43122cb01247e7c644872ba5bd; SESSID=OVZCUVZDMTIyxOA=="
network: Server https://niihka.muohio.edu/sakai-login-tool/container requesting to set-cookie with "JSESSIONID=55883783-c7fa-4cb0.Niihka-03; Path=/; Secure; HttpOnly"
network: Cache entry not found [url: https://muidp.muohio.edu/cas/login?service=https%3A%2F%2Fniihka.muohio.edu%2Fsakai-login-tool%2Fcontainer, version: null]
network: Connecting https://muidp.muohio.edu/cas/login?service=https%3A%2F%2Fniihka.muohio.edu%2Fsakai-login-tool%2Fcontainer with proxy=DIRECT
network: Connecting http://muidp.muohio.edu:443/ with proxy=DIRECT
security: Loading certificates from Deployment session certificate store
security: Loaded certificates from Deployment session certificate store
security: Checking if certificate is in Deployment denied certificate store
network: Connecting https://muidp.muohio.edu/cas/login?service=https%3A%2F%2Fniihka.muohio.edu%2Fsakai-login-tool%2Fcontainer with cookie "JSESSIONID=1ABB2411E999F13B9A1C0E8; __utma=40004414.470991547.1342969029.1348793119.1348840212.4; __utmz=40004414.1342969029.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); SaneID=134.53.7.196-1348498927383600; SESSID=OVZCUVZDMTkxOA=="
network: Server https://muidp.muohio.edu/cas/login?service=https%3A%2F%2Fniihka.muohio.edu%2Fsakai-login-tool%2Fcontainer requesting to set-cookie with "JSESSIONID=6C4881D27BF080572CFE3; Path=/cas; Secure"
network: Cache entry not found [url: https://niihka.muohio.edu/access/content/group/ffbe4f38-c9a5-46cd-9acb-b7d4a712f078/Modules/Module%20-%20Low%20level%20programming/simulation/, version: null]
basic: error: Incompatible magic value 168430090 in class file NEWCPUSim.
java.lang.ClassFormatError: Incompatible magic value 168430090 in class file NEWCPUSim
                at java.lang.ClassLoader.defineClass1(Native Method)
                at java.lang.ClassLoader.defineClass(Unknown Source)
                at java.security.SecureClassLoader.defineClass(Unknown Source)
                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.initAppletAdapter(Unknown Source)
                at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
                at java.lang.Thread.run(Unknown Source)
Ignored exception: java.lang.ClassFormatError: Incompatible magic value 168430090 in class file NEWCPUSim
basic: Dialog type is not candidate for embedding
basic: Removed progress listener: sun.plugin.util.ProgressMonitorAdapter at 130fa6f
security: Reset deny session certificate store
basic: Dialog type is not candidate for embedding
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://collab.sakaiproject.org/pipermail/sakai-dev/attachments/20121017/93fad64a/attachment.html