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

why java does not support multiple inheritance

Diamond, Euclid, Evergent, KLKJ, Mind Tree, NIIT, SSI Small Scale Industries, Wipro,

41 104758

why to use transient variables when static variables can be used for Serialization

4 20692

Which method the Servlet container call to create the instance of the servlet?

emc2, JK Technosoft,

16 27705

What are the disadvantages of using threads?

Oracle, SFS,

3 12747

Can you write Java code for declaration of multiple inheritance in Java ?

Kingshir, Oracle,

6 12744

diff b/w client side testing n server side testing? how to pass paramerers in winrunner?

IBM, Polaris,

4 22710

Hello frds .recently I've got a call for the test in infosys .iam having 1.5 yr exp in java pltfrm.plz can anyone tell the main process( in detail) for infosys experienced professionals

1 4445

1.HttpSession 2.Hidden fields 3.URL Rewriting these primitive type of Session maintainance. What is the other type of process that could help to maintain the Session? pls Explain the process if u know?

OnMobile,

5 12713

Why DOM Parser would take more Memory than SAX parser while they are parsing?

OnMobile,

3 10110

is that compulsory to have Primarykey-forignkey for joints (outer inner,equal)

IonIdea,

2 10183

How to pass runtime Parameter in Struts1.2?

2 12145

why servlet is used as controller not JSP?

MCS,

9 22375

How to create validations?what are struts validation components?

2 13033

How to set email notification using struts.Plz give the example code?

HCL,

5 15490

How many types of action clases are there in stuts and their uses?

OHO, TCS, Wipro,

15 58345

Un-Answered Questions { Java J2EE }

Outline the major features of java.

1074

Why is jdbc needed?

907

Which is best eclipse for java?

883

Can hibernate id be string?

372

Does hibernate work with nosql?

342

How will you invoke any external process in java?

1114

Give an example of using point to point model in JMS?

855

Why is string immutable in java?

1097

Explain the significance of class loaders in bootstrap?

943

What is jms and how it works?

965

What happens when a thread cannot acquire a lock on an object in java programming?

1009

Why there is no call by reference in java?

922

What is servlet in spring?

428

Difference between ‘is-a’ and ‘has-a’ relationship in java?

1006

What are different types of constants?

1044

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