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Java Related Interview Questions
Questions Answers Views Company eMail

What is garbage collection in Java, and how can it be used ?

Accenture, HCL, Infosys, Sara, SITS, TCS, Wipro,

32 70149

Differentiate Vector and ArrayList?

Max Telecom, Wipro,

6 12028

Differentiate constructor and a method and how are it be used?

Wipro,

7 12792

What is an abstract class?

DBS, Wipro,

7 11392

How can final class be used?

Accenture, Wipro,

5 12701

By what default value is an object reference declared as an instance variable?

Wipro,

1 12793

Java support what type of parameter passing ?

Wipro,

7 15785

Explain the term serialization?

Wipro,

10 13956

Is there is any error if you have multiple main methods in the same class?

Infosys, Wipro,

10 15919

What is Overriding and how can it be used?

Consagous, Wipro,

7 17166

How is serialization used generally ?

3 6892

How are Swing and AWT be differentiated?

Wipro,

3 7826

Explain pass by reference and pass by value?

IBM, Wipro,

8 16068

In which way does a Primitive data type is passed ?

Sun Microsystems,

5 10747

What happens when a main method is declared as private?

DELL, Infosys, L&T, Sun Microsystems,

22 50350


Un-Answered Questions { Java Related }

What are the different ways of implementing thread? Which one is more advantageous?

376


What is the way to rollback transaction if something goes wrong using hibernate api?

59


Explain how hashmap works?

420


Does google use java?

340


What is the purpose of transferhandler class?

388






What are drivers available?

455


How to create war file?

433


Which component handles cluster communication in jboss?

450


Why actionservlet is singleton in struts?

423


How can you know about drivers and database information ?

399


What is context attribute?

390


Write about aop module?

72


Provide some important Struts2 constants that you have used?

424


What is the difference between jboss and weblogic?

358


What is a pojo class in hibernate?

102