Why I get this exception in an applet?

Question

I run the JMF Diagnostics Applet in my IE5.0,
while in the applet area,there's only the message:
Exception:java.security.AccessControlException:access denied(java.net.SocketPermission samples resolve).
The target of this applet is just using the method "Class.forName()" to find whether JMF has been installed in the visitors machine.
How could I resolve this problem?
thx

Answer 1

Frequently Asked Questions - Java Security
http://java.sun.com/sfaq/
Most Applets are prevented from accessing the underlying computer. If you are learning Java, build regular applications to avoid many of the security issues of Applets.
In general, applets are prevented from reading and writing files on the client file system, and from making network connections except to the originating host.
In addition, applets are prevented from starting other programs on the client. Applets are also not allowed to load libraries, or to define native method calls. If an applet could define native method calls, that would give the applet direct access to the underlying computer.