UML is used as a representation of the Java programming language. Using sample class and sequence diagrams, you can see how UML conveys unambiguous code-mapping information to developers.

Changes made for architecture in UML 2.0 primarily involve the structural (class) model, while changes for scalability are best seen in the improved sequence diagrams.

Sequence diagrams should be kept as simple as possible, and any message that is insignificant need not be shown. Figure A shows a sample sequence diagram with the following primary components: ...