Download as PDF, PPTX
More Related Content
Similar to Servlet Life Cycle & Generic Servlet
Servlet Life Cycle & Generic Servlet
- 1. NADAR SARASWATHI COLLEGE OFARTS AND SCIENCE DEPARTMENTOF COMPUTERSCIENCE BY K.DIANA DEVI I M.SC(CS)
- 2. Servlet life cycle GenericServlet
- 3. Road Map Over viewof the life cycle Birth of a servlet Life of a servlet Death of a servlet
- 4. Over view of servleTlife cycle
- 5. Life of aservlet Birth: Create and Intialize the Servlet Important method: Init() Life: Handle 0 Or more Client Request Important method: Service() Death: Destroy the Servlet Important method: Destroy ()
- 6.
- 7. The init() MethoD The Init () Method Is Called When The Servlet Is First Request By A Browser Request It Is Not Called Again For Each Request Used For One Time Initialization
- 8.
- 9. Life of aservlet The First Time A Servlet Is Called The Servlet Is Instantiated And It’s Init() Method is called Only One Instance Of The Servlet Is Instantiated This One Instance Handles All Browser Requests
- 10. Service Method EachTime The Servlet Receives A Request For A Servlet The Server Spawns A New Thread And Calls The Servlet Service () Method
- 11.
- 12. Death of aservlet Before A Server Shuts Down It Will Call The Servlet’s Destroy () Method You Can Handle Any Servlet Clean Up Here. Ex: Updating log Files Closing Database Connections Closing Any Socket Connections
- 13.
- 14. Void int(Servlet ConfigConfig) -Initializers The Servlet Void Service (Servlet Request req, Servlet Response res) -Carries Out A Single Request From the Client Void Destroy () -Cleans Up What Ever Resources Being Held (Ex: Memory,File Handles)
- 15. Servlet Config GetServlet Config() -Returns As Servlet Config Object Which Contains Any Initialization Parameters And Start up Configuration For This Servlet String Get Servlet info() -Returns A String Containing Information About the Servlet Such as it’s Authors, Version & Copyright.
- 16.