Very few. Those patterns went with J2EE 1.4 and most aren't used anymore.
Per the
exam objectives, this is what you need to know:
Demonstrate knowledge of Java EE design patterns including: Service Starter, Singleton, Bean Locator, Resource Binder, Dependency Injection, Payload Extractor, Context Holder, and Thread Tracker.
Select an appropriate pattern for a given application challenge from the following: Facade, Strategy, Observer, Composite, and Abstract Factory.
Identify a design pattern, using a description of its features, from the following: Facade, Strategy, Observer, Composite, and Abstract Factory.
Identify the use of the law of leaky abstractions or a specific anti-pattern in a given scenario.