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Servlet Interview Questions & Answers

Below we have listed all the Servlet Interview Questions and answers. Feel free to comment on any Servlet Interview Questions or answer by the comment feature available on the page.

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Servlet Interview Questions & Answers

A servlet is a Java programming language class that is used to extend the capabilities of servers that host applications accessed by means of a request-response programming model. Although servlets can respond to any type of request, they are commonly used to extend the applications hosted by web servers. A servlet is a small program that runs on a server. The term was coined in the context of the Java applet, a small program that is sent as a separate file along with a Web (HTML) page. Java servlets are becoming increasingly popular as an alternative to CGI programs. The biggest difference between the two is that a Java applet is persistent.

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I can do every thing using jsp itself,then what is the need of using servlet?
in which situation ,we must use servlet with jsp?
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Whats the difference between using invalidate() & sessionDestroyed for sessionclosing.
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How many ways we can destroy the servlet in ur program
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What is default capacity of connection pool objects in pool of app-server Weblogic and Tomcat webserver?
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In normal javabean, bean object is serailizable,and Connectuin object is transient object.Then How we using javabean for communnication between Servlet and JSP for data Transfer?
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How can I retrive only IntegerObjects from a vector in which I stored all types of objects
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Consider a scenario where 2 instances of an appserver are running in a machine. And one application has been deployed in the two servers. Does these two applications deployed in two servers use the same JVM or different?
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Consider a scenario in which 4 users are accessing a servlet instance. Among which one user called destroy() method. What happens to the rest 3 users?
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How can you do ErrorMapping in Action class?
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What is the disadvantage of the ServerSideIncludes?
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What is session tracking ?
state the uses of GET and POST request to handle Http request ?
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How differ servlets from its peer technology?
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What is difference between servlet and ASP?
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Have you used threads in Servelet




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How do to prevent user by viewing secured page by clicking back button when session expired..:)
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How do we prevent user to read secured page.. after logout
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What is default Session time out in the servers like Tomcat, Weblogic, JBoss,..etc?
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What is difault http method in http servlet?
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How can a servlet automatically updated by its data without refreshing?
take one example of one sensex site. the corresponding data are shown in a scrolling manner. how they can automatically be refreshed after some time. without refreshing the page.
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What is send redirect method? and when it is used?
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Latest 20 Questions
Payment of time- barred debt is: (a) Valid (b) Void (c) Illegal (d) Voidable
Consideration is defined in the Indian Contract Act,1872 in: (a) Section 2(f) (b) Section 2(e) (c) Section 2(g) (d) Section 2(d)
Which of the following is not an exception to the rule, "No consideration, No contract": (a) Natural love and affection (b) Compensation for involuntary services (c) Completed gift (d) Agency
Consideration must move at the desire of: (a) The promisor (b) The promisee (c) The promisor or any other party (d) Both the promisor and the promisee
An offer which is open for acceptance over a period of time is: (a) Cross Offer (b) Counter Offer (c) Standing Offer (d) Implied Offer
Specific offer can be communicated to__________ (a) All the parties of contract (b) General public in universe (c) Specific person (d) None of the above
_________ amounts to rejection of the original offer. (a) Cross offer (b) Special offer (c) Standing offer (d) Counter offer
A advertises to sell his old car by advertising in a newspaper. This offer is caleed: (a) General Offer (b) Special Offer (c) Continuing Offer (d) None of the above
In case a counter offer is made, the original offer stands: (a) Rejected (b) Accepted automatically (c) Accepted subject to certain modifications and variations (d) None of the above
In case of unenforceable contract having some technical defect, parties (a) Can sue upon it (b) Cannot sue upon it (c) Should consider it to be illegal (d) None of the above
If entire specified goods is perished before entering into contract of sale, the contract is (a) Valid (b) Void (c) Voidable (d) Cancelled
______________ contracts are also caled contracts with executed consideration. (a) Unilateral (b) Completed (c) Bilateral (d) Executory
A offers B to supply books @ Rs 100 each but B accepts the same with condition of 10% discount. This is a case of (a) Counter Offer (b) Cross Offer (c) Specific Offer (d) General Offer
_____________ is a game of chance. (a) Conditional Contract (b) Contingent Contract (c) Wagering Contract (d) Quasi Contract
There is no binding contract in case of _______ as one's offer cannot be constructed as acceptance (a) Cross Offer (b) Standing Offer (c) Counter Offer (d) Special Offer
An offer is made with an intention to have negotiation from other party. This type of offer is: (a) Invitation to offer (b) Valid offer (c) Voidable (d) None of the above
When an offer is made to the world at large, it is ____________ offer. (a) Counter (b) Special (c) General (d) None of the above
Implied contract even if not in writing or express words is perfectly _______________ if all the conditions are satisfied:- (a) Void (b) Voidable (c) Valid (d) Illegal
A specific offer can be accepted by ___________. (a) Any person (b) Any friend to offeror (c) The person to whom it is made (d) Any friend of offeree
An agreement toput a fire on a person's car is a ______: (a) Legal (b) Voidable (c) Valid (d) Illegal


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