Here I have delved into the J2EE architecture, explaining
the characteristic of an Enterprise Application, Different Enterprise
Application Models such as 2-tier architecture, 3-tier architecture &
n-tier architecture. I have discussed in detail about J2EE Architecture
Overview, benefits of J2EE, the J2EE Platform Technologies such as Component
Technologies, Service Technologies & Communication Technologies. I have
also discussed t J2EE Packaging and Deployment Descriptor.