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 95864

Differentiate Vector and ArrayList?

Max Telecom, Wipro,

6 28686

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

Wipro,

7 29347

What is an abstract class?

DBS, Wipro,

8 27746

How can final class be used?

Accenture, Wipro,

5 27477

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

Wipro,

1 26556

Java support what type of parameter passing ?

Wipro,

7 20203

Explain the term serialization?

Wipro,

10 31402

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

Infosys, Wipro,

10 33556

What is Overriding and how can it be used?

Consagous, Wipro,

7 33271

How is serialization used generally ?

3 21360

How are Swing and AWT be differentiated?

Wipro,

3 22384

Explain pass by reference and pass by value?

IBM, Wipro,

8 32516

In which way does a Primitive data type is passed ?

Sun Microsystems,

5 25480

What happens when a main method is declared as private?

DELL, Infosys, L&T, Sun Microsystems,

22 74459

Un-Answered Questions { Java J2EE }

Which collection is best for sorting in java?

1126

What is the front controller class of spring mvc?

397

What is lazy initialization in hibernate?

466

What is http servlet? Explain with the help of an example.

1068

What is the use of bag in hibernate?

406

What is difference between cookies and httpsession?

1097

What is spring dao?

414

Which one is better setter injection or constructor injection?

421

What is difference between ejb 1.1 and ejb 2.0?

1005

What is a short in java?

1048

When is the finally clause of a try-catch-finally statement executed?

1074

What do you mean by scope object and what are its types?

1080

What is strut web xml?

943

Write a program in java to establish a connection between client and server?

969

What are the queues in the java collection framework? : java collections

1024

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