To effectively use Unified Modeling Language when developing Java applications, developers must have a thorough understanding of the UML elements and how these elements map to Java.

For instance, in UML class diagram, how do you model a delegate or an event? Also, if you have a class which is "generalized" from a base class, do you need to explicitly put the implemented ...

To understand how the functions are implemented by classes, the class diagram, package diagrams, interaction diagrams, and state transition diagrams are then traced.