File list (Check if you may need any files):
Observer
........\classes
........\.......\ConcreteSubject.class
........\.......\connections.xml
........\.......\Observer.cdi
........\.......\Observer.class
........\.......\ObserverA.class
........\.......\ObserverB.class
........\.......\Subject.class
........\.......\Test.class
........\Observer.jpr
........\src
........\...\ConcreteSubject.java
........\...\Observer.java
........\...\ObserverA.java
........\...\ObserverB.java
........\...\Subject.java
........\...\Test.java