At that time, I had no programmer experiences. In one job interview, I cliamed I had done session management things. The interviewer suddenly stopped my talking and told me that session management is automatic in the servlet programming. It was a big blow on me. After a few second's pause, I concentrated myself and responded: "Yes, it is true. The servlet engine provides basic machanism for session management. However, application programmers still need to do something. For instance, we bind our shopping cart in the session, so we need to constantly manipulate on the session. " This is a horrible experience to me. But it also lends me a lot of moral support. I did not get an offer from that interview because I did not know WebLogic. After that, I began to ask myself many questions and pay more attention to the life cycle things of a project.