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 94633

Differentiate Vector and ArrayList?

Max Telecom, Wipro,

6 28315

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

Wipro,

7 29003

What is an abstract class?

DBS, Wipro,

8 27433

How can final class be used?

Accenture, Wipro,

5 27226

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

Wipro,

1 26375

Java support what type of parameter passing ?

Wipro,

7 19860

Explain the term serialization?

Wipro,

10 30919

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

Infosys, Wipro,

10 33051

What is Overriding and how can it be used?

Consagous, Wipro,

7 32927

How is serialization used generally ?

3 21173

How are Swing and AWT be differentiated?

Wipro,

3 22150

Explain pass by reference and pass by value?

IBM, Wipro,

8 32112

In which way does a Primitive data type is passed ?

Sun Microsystems,

5 25219

What happens when a main method is declared as private?

DELL, Infosys, L&T, Sun Microsystems,

22 73400

Un-Answered Questions { Java J2EE }

how to develop the submit and search operations in single jsp using struts?

2924

What is use of @qualifier in spring?

611

What are the steps involved in editing websphere member manager (wmm.xml) files on a federated node ?

757

How does map works in java?

940

What is scope of a variable?

1036

What is the difference between path and classpath variables?

964

How many JVMs can run on a single machine and what is the meaning of Just-In-Time (JIT) compiler?

1337

What is javac in java?

950

What is a polymorphic association?

323

What does executeupdate return in jdbc?

920

How do you add spaces in java?

939

What is save method in hibernate?

375

What are the methods in hibernate?

374

How transient variable is different from volatile variable?

1016

Do we have pointers in java?

897

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