"Incompatible magic value" error when adding an external Applet within {html} tags on Confluence

Chris Widget

I have a page with 3 .JAR attachments. I am trying to execute the applet using this simple code:

{html}

<APPLET CODEBASE="http://XXX:12500/download/attachments/7341517/" ARCHIVE="main.jar,controlP5.jar,core.jar" CODE="main.class" WIDTH=400 HEIGHT=200> </APPLET>

{html}

The page displays correctly, but the applet does not run. I get the following error:

Java.lang.ClassFormatError: Incompatible magic value 1008813135 in class file main
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
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.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception: java.lang.ClassFormatError: Incompatible magic value 1008813135 in class file main

Does anyone have any idea what is wrong? Thank you.

Jim Birch

From http://stackoverflow.com/questions/2390733/incompatible-magic-value-1008813135</p<>>

0xCAFEBABE is the usual first 4 bytes of a Java file.

1008813135 is <!DO in Latin encoding, which is, in all probability, the start of <!DOCTYPE....

It is therefore likely the start of a 404 error, or some other error page from the server

ie. You may be trying to load something that the server doesn't know. Check logs, try to load the jar manually, etc.

(BTW you might be better off embedding html code in a user macro rather than enabling the html tag, it's a lot safer.)