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Servlets Pertanyaan dan Jawaban Wawancara

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JSP vs Servlets

Ques 31. When we don't write any constructor for the servlet, how does container create an instance of servlet?

Container creates instance of servlet by calling Class.forName(className).newInstance().

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Ques 32. Once the destroy() method is called by the container, will the servlet be immediately destroyed? What happens to the tasks(threads) that the servlet might be executing at that time?

Yes, but Before calling the destroy() method, the servlet container waits for the remaining threads that are executing the servlet?s service() method to finish.

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Ques 33. What is the difference between callling a RequestDispatcher using ServletRequest and ServletContext?

>We can give relative URL when we use ServletRequest and not while using ServletContext.

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Ques 34. Why is it that we can't give relative URL's when using ServletContext.getRequestDispatcher() when we can use the same while calling ServletRequest.getRequestDispatcher()?

Since ServletRequest has the current request path to evaluae the relative path while ServletContext does not.

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