You can program the body of methods in your favorite Java environment or within Objecteering/UML itself. Objecteering/UML allows you to browse between the UML model and the Java code at all times, and ensures that compilation errors are passed directly up to the model elements concerned.
Automated Design Patterns or to adapt those provided as standard by Objecteering/UML.

Do you wish to modify the model ?
Objecteering/UML incrementally regenerates your application's code.

Do you wish to modify your code ?
Objecteering/UML ensures the incremental update of your repository.