There are afunction like Runtime.load(filename.so) but load a .class file?

I need build something like a plugin system: I get a string like "framework.plugin.FooClass" and "FooClass.class" file in run time, and I need to get a new instance of this one.
In code:
IPlugin plugin;
String className = "framework.plugin.FooClass";
plugin = (framework.IPlugin)Class.forName("framework.plugin.FooClass").newInstance();But I haven't this class in classpath. I see Runtime.load(filename.so) but look like only load native code, it doesn't? I'm on wrong way?
Thanks in advance,
Diego

Either put the plug-in's folder on the class path or use an URLClassLoader.

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Revision: 3519
Author: [email protected]
Date: 2008-10-08 04:17:40 -0700 (Wed, 08 Oct 2008)
Log Message:
Fix typo in error string for situations where there are advanced messaging configuration settings from LCDS used in the configuration files but no AdvancedMessagingSupport service. The error string said that there was no flex.messaging.services.AdvancedMessagingService registered but it is the flex.messaging.services.AdvancedMessagingSupport service that needs to be registered.
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what are different ways to load a class??

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>
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>
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There are afunction like Runtime.load(filename.so) but load a .class file?

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