What is the Best Way to Visualize Medium-Sized Program in Java?

Many UML tools will offer some support for reverse engineering Java code into a UML class diagram. A tool like Visual Paradigm can be used if you require some more advanced support.Visual Paradigm supports round-trip engineering of Java. It also can generate sequence diagram from Java code. You can transform Java into a standard UML model and carry on modeling.

Useful UML Resources

• OMG UML Specification
• Cross-Platform UML modeling software
• UML tutorials