java.lang.SecurityException: Bad applet class name

[SaiManasa Dasari]

Hi,

I am getting bad applet class name exception in my mac os x 10.6.8 while opening applets.Please help me how to resolve this?The below info i am getting in java console is
Java Plug-in 1.6.0_39
Using JRE version 1.6.0_39-b04-442-10M4008 Java HotSpot(TM) 64-Bit Server VM
exception: Bad applet class name.
java.lang.SecurityException: Bad applet class name
at sun.plugin2.applet.Plugin2Manager.createApplet(Plugin2Manager.java:3056)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Plugin2Manager.java:1497)
at java.lang.Thread.run(Thread.java:680)
Exception: java.lang.SecurityException: Bad applet class name
Ignored exception: java.lang.SecurityException: Bad applet class name

Please help me to resolve this and how to get work applets.
Thanks in advance.

[Ulf Dittmer]

Post the layout of the files and directories as well as the entire APPLET tag.