Java J2EE Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java (6529)
Advanced Java (552)
Swing (223)
EJB (402)

Servlets (804)
Struts (701)
JDBC (771)
JMS (324)

SunOne (10)
J2EE (485)
Weblogic (694)
Websphere (573)

Java J2EE 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 95637

Differentiate Vector and ArrayList?

Max Telecom, Wipro,

6 28630

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

Wipro,

7 29292

What is an abstract class?

DBS, Wipro,

8 27698

How can final class be used?

Accenture, Wipro,

5 27435

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

Wipro,

1 26526

Java support what type of parameter passing ?

Wipro,

7 20138

Explain the term serialization?

Wipro,

10 31313

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

Infosys, Wipro,

10 33490

What is Overriding and how can it be used?

Consagous, Wipro,

7 33233

How is serialization used generally ?

3 21331

How are Swing and AWT be differentiated?

Wipro,

3 22346

Explain pass by reference and pass by value?

IBM, Wipro,

8 32455

In which way does a Primitive data type is passed ?

Sun Microsystems,

5 25428

What happens when a main method is declared as private?

DELL, Infosys, L&T, Sun Microsystems,

22 74291

Un-Answered Questions { Java J2EE }

How can we invoke stored procedures in hibernate?

391

How do I use a startup class to initialize and later reference jms objects?

830

Which script to change the java sdk used by profile?

858

Explain Action Servlet?

1076

Explain the features are in servlet 3?

1046

Can a static method be final?

1046

Describe method overriding

1121

Can private members of a base class are inheritable justify?

918

Name component subclasses that support painting in java programming?

1057

What are encapsulation, inheritance and polymorphism?

999

What is basic authentication?

996

Explain the difference between a web server and a web container?

995

What is a modular application? What does module-relative mean?

1050

What is pojo implementation?

382

What is difference between hibernate save(), saveorupdate() and persist() methods?

321

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