Windward "beans" are not Java beans although there is a lot in common between the two concepts. The Windward beans are a way to have your code called when a tag is processed and can be used in both the Java and .NET engine (in .NET using J#). The sample includes information about how to use beans in both the standard engine and in client-server mode.
Beans are not supported in the latest versions. Please see our downloads page for the latest releases: http://www.windward.net/support/downloads/