Day 3. Working with Servlets

In yesterday's session you learned important concepts and technologies that form part of J2EE. You started the day with a brief introduction to J2EE and then moved on to understand the concepts of each of the J2EE technologies, such as Java servlets, JavaServer Pages, JDBC, JNDI, Enterprise JavaBeans, and Java Message Service API. In the final part of yesterday's session, you learned the problem statement of the Airline Ticket Booking System MVC application case study and then went on to design the class diagram and ER diagram for the application.

Before starting today's session, we recommend that you read Appendix B, which details the steps required to install BEA WebLogic Server 7.0, as provided in the CD-ROM. This will prepare the ground for the sample applications you will build during the next three weeks.

The next two days will cover the first server-side Java technology supported by WebLogic, the Java Servlet API 2.3 specification. You will study Java servlet concepts, the Java Servlet API, and different techniques for session handling; finally, you will write a sample Java servlet and deploy it in the WebLogic Server. In addition to the basics of Java servlets, in tomorrow's session, you will be studying the advanced concepts of Java servlets such as filters and listeners. At the end of tomorrow's session, you will be building the first element of the Airline Ticket Booking System MVC application case study, the Controller servlet.