The application server GlassFish supports all the most modern and juicy features of Java Enterprise Edition (EE), formally known as J2EE. Made by Sun, the server has a dual purpose as both the official application server reference for Java EE and as a viable and scalable piece of software that performs well under most conditions. David R. Heffelfinger’s book “Java EE 5 Development using Glassfish”, published by PACKT, follows both purposes by exploring the frameworks and the server deployment; thus the books details resonate vigorously with the spirit behind the tool.