What is servlet and its life cycle?
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What is the use of httpservletrequestwrapper and httpservletresponsewrapper?
What is api in servlet?
Which is better approach among four(HttpSession,cookie,URL Rewriting, Hidden Fields) Session Tracking technic's ? Why ?
Why filter is used in servlet?
My Question is that i am using <image> tag in my servlet and after compilation after that calling by url in my browser then images are not showing. Sometime images are showing and sometime is not showing. I am using Tomcat to run my servlets. Tell me if there any specification for image in servlets or what is solution for this ??
Can you refresh servlet in client and server-side automatically?
How can a servlet be used to generate plain text instead of html?
What is the use of request dispatcher interface?
Explain how to improve Servlet Performance?
Whether thread can be used in servlets?
How forward () method is different from send redirect () method?
Explain in brief the directory structure of a web application?
Core Java 
