How many Design Patterns are there in Java ?

In j2ee they have 15 Design Pattern:

Presentation Tier:
1.Intercepting Filter
2. Front Controller
3. View Helper
4. Composite View
5. Service to Worker
6. Dispatcher View

Business Tier:
7. Business Delegate
8. Transfer Object
9. Session Facade
10. Service Locator
11. Transfer Object
12. Value List Handler
13. Composite Entity

Integration Tier:
14.Service Activator
15 Data Access Object