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Java Interview Questions

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

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Java is a programming language and computing platform first released by Sun Microsystems in 1995. There are lots of applications and websites that will not work unless you have Java installed, and more are created every day. Java is fast, secure, and reliable. Java is a programming language expressly designed for use in the distributed environment of the Internet. It was designed to have the "look and feel" of the C++ language, but it is simpler to use than C++ and enforces an object-oriented programming model.

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What is the difference between java and c and c++?

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What is the difference between Delegation event model and Inheritance event model?
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How does multithreading take place on a computer with a single CPU?
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What is the immediate superclass of Menu?
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What is Weak reference and Soft reference in java?


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What is the difference between yielding and sleeping?
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What is the difference between classpath and path variable?

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Difference between "APPLET" and "APPLICATION"


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What are the tiers in J2EE architecture?
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How can we take various inputs from user as int,char,string,float etc ?

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Doesn't the compiler always make a no-arg constructor for you?

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How can you achieve Multiple Inheritance in Java?
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How to call a COM object within java?



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What is the difference between the Reader/Writer class hierarchy and the InputStream/OutputStream class hierarchy?
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Can we have 3 methods in a single servlet i.e service(), doPost() and doGet() method. If yes, then what method will be called. Tell me the servlet cycle in such cases

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How to access Blob and Clob data values from oracle thru java?

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Can an anonymous class be declared as implementing an interface and extending a class?
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If my java based application is hanging once in a while. Where would you start looking at the problem, what changes can you do?

My application has a builtin Ldap client and is communicating with a Ldap server. now having a problem with the authentication, how should i start troubleshooting? I, being responsible for the application and the OS, what can i do?
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Why java shouldbe preferred,when we can get the sameoutput using VB orany otherlanguages. Howcan we convincethe interviewer ,other than givingthe simple features ofjava. could anyone pls answer this question?


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How are the elements of a GridBagLayout organized?
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India News Network
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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