Dynamic Class
Loading
Dynamic class loading is very self-descriptive. We dynamically download
the classes that we need. Think about what this entails - downloading
the bytes needed to run a class, and then loading them into the JVM with
a class loader. Sound familiar? It may. But either way,
it's an excuse for us to use the security manager we've learned.
- We'll use the class RMISecurityManager.
- This is a fairly simple class that just has a constructor of its own. All other methods are inherited from class SecurityManager.
- We must assign this security manager to be able to dynamically download classes. So, when we start up our application, we need to add this line:
System.setSecurityManager(new RMISecurityManager());
And that's really all there is to it.