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 the difference between object and class

IBM,

10 12076

diff b/w managed server and non managed server? can u briefly explain?

Wipro,

3 9342

what is command for find out the ip add and port no. of the machine in UNIX?

Wipro,

11 21227

when exactly should we use throws ,and wen exactly should we use the try and catch for exceptional handling

2457

There are 2 different ways to create an object. a)By using keyword "new" b)By using Class.forName ("className").newInstance(); What is the difference between these 2 methods.

3 6260

In cluster , the load balancing that simply redirect the client request to any available server in weblogic server cluster. Suppose assume we have 4 managed servers and one admin server. can we trace that request is going to which managed server in the cluster? is it possible to tell that request is going to which ipaddr/managed server?

Wipro,

3 11067

how this statement works..? public void service(HttpServletRequest request,HttpServletResponse response)

TCS,

2 8334

What is difference between welogic server and WebSphere?

TCS,

2 9342

Is it possible to create object with out its default constructor? if possible how? else not possible? justify

5 8030

when System.out.println("") is executed what happens in the back ground?

2 5343

why do we use interface in java?

5 9692

There are 2 classes . Class A and Class B. In Class A i declared a variable in private. if we can access this private variable in Class B. If yes means , how we can access ?

HCL, Itx Centrics, Virtusa,

7 12386

Urgent requirement of JAVA/.NET/QA in a CMMI level3 MNC for Pune location.

2376

when to for abstract class and when to go for interface

2 4596

how to print a numbers from 1 to 100 with out using control structures?

IBM,

4 7297

Un-Answered Questions { Java J2EE }

What is the importance of hibernate mapping file?

441

What does modeldriven interceptor?

1077

What is the purpose of the system class in java?

1049

What are the two mapping associations used in hibernate?

436

What are the new features added to servlet 2.5?

1098

What is an entity in entity framework?

498

Explain about abstract classes in java?

1041

Is jpa and hibernate same?

429

What is the difference between plain-validator and field-validator?

963

What is the use of callablestatement?

1022

Explain the concept of a beanfactory?

415

Why do we need hashset in java?

1048

why do we need log target when there is already a default logging mechanism available in datapower?

822

Explain integrate log4j in struts2 application?

1017

What are the different phases of the portlet life cycle?

847

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