55 What happens when our servlet gets other than first request? |Adv Java Servlet Programming Tutor

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Servlet container checks the availability of our servlet class object?
Case 1: If our servlet class object is Available:
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1) Servlet container crates one set of request, response objects for current request given by client or web browser and also starts one thread on our servlet class object(existing) represent current thread.

2) Servlet container raises Request-Arrival event & calls service(-,-) method on our servlet class obejct having request, resonse object as arguments.

3) This service(-,-) method generated output goes to browser window as response through web server.

Case 2: If not available:
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1) Servlet Container loads our servlet class from WEB-INF\classes directory and instantiate that class using Zero parameter constructor.

Ex. Class.forName("DateServ").newInstance();

2) Servlet container creates ServletConfig object & assigns that ServletConfig object to our servlet class object as right hand object.

3) Servlet container raises instatiation event and call init(-) method of life cycle method of servlet class object having ServletConfig object as argument value.

4) Servlet container creates one set of request, response objects for current request & also starts one thread on our servlet class object representing current request.

5) Servlet container raises Request-Arrival event and calls service(-,-) method on our servlet class object having request, response objects as arguement value.

6) This service(--) method generated output goes to browser window as response through web server.