| What is Session Tracking? There are a number of problems that arise from the fact that HTTP is a "stateless" protocol. In particular, when you are doing on-line shopping, it is a real annoyance that the Web server can't easily remember previous transactions |
| The Session Tracking API Using sessions in servlets is quite straightforward, and involves looking up the session object associated with the current request, creating a new session object when necessary, looking up information associated with a session, storing information in a session, and discarding completed or abandoned sessions. |
| Handling Cookies Cookies are small bits of textual information that a Web server sends to a browser and that the browser returns unchanged when visiting the same Web site or domain later. |
| Can cookies only be set in terms of seconds? What if I want to set one for a year? There are no convenience methods for setting a cookie's lifespan in terms of days, months or years. However, you can still have a cookie exist for these amounts of time. |
| How can I enable session tracking for JSP pages if the browser has disabled cookies? We know that session tracking uses cookies by default to associate a session identifier with a unique user. If the browser does not support cookies, or if cookies are disabled, you can still enable session tracking using URL rewriting. |
| Questions and Answers - Session state in the client tier A session is a sequence of service requests by a single user using a single client to access a server. The information maintained in the session across requests is called session state. Session state may include both information visible to the user (shopping cart contents, for example) and invisible application control information (such as user preferences). |