what is j2ee
J2EE is a platform-independent, Java-centric environment from Sun for developing, building and deploying Web-based enterprise applications online.The J2EE platform consists of a set of services, APIs, and protocols that provide the functionality for developing multitiered, Web-based applications.Some of the key features and services of J2EE: 1  At the client tier, J2EE supports pure HTML, as well as Java applets or applications. Enterprise JavaBeans (EJBs) provide another layer where the platform's logic is stored. 2  An EJB server provides functions such as threading, concurrency, security and memory management. 3  These services are transparent to the author.