Hi Nadine, I think you "just" have to know about the listeners in servlet/jsp: This is much more a programmer exam than about architecture or program design: I found 6 listeners in the api: javax.servlet.http.HttpSessionActivationListener javax.servlet.http.HttpSessionAttributeListener javax.servlet.http.HttpSessionBindingListener javax.servlet.http.HttpSessionListener javax.servlet.ServletContextAttributeListener javax.servlet.ServletContextListener A good "framework" to understand these listeners is satyas who_speaks_and_who_listens_logic http://www.javaranch.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic&f=18&t=000865 If you are interested in event notification patterns there is a fresh tutorial in IBM_developerworks: http://www6.software.ibm.com/developerworks/education/j-delivery/j-delivery-1-1.html But of course you dont need to know that for the exam.
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