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

in EJB diclare the static methods are not?

iGate,

3448

any other way to print the text without using System.out.println() in java?

IBM, Infosys,

5 19546

what is the difference between applet and swing and gui application in java . What we do with the collections set and list interface

CTS, Phoenix Technologies,

2 8877

If configured multicast, which error is occurred..?

1 6475

Please explain about internal casting and external casting in java..?

3047

Why should we create an object? what is a need of it? Apart from access members of a class i want what is a need of object what does it contain?? In normal class to access any member of thaht class we create object where as for static class we access its members using class name. what is a difference between them... thanks in advance.

1 3644

what are memory considerations of jsp compares to other web components?

TCS,

6539

what are the differences between Generic server and application server in WebSphere environment?

3502

whether java is fully object oriented language or partially object oriented language

Infosys, ME, SMK,

4 8491

while creating thread why we extend thread class

2 4991

How HashMap implemented in java? how it internally works when values are added or searched from hashMap?What is the difference betweenthe implementation of hashmap and Linked Hashmap?

IBM,

3 10687

In inglish: How to convert jar to exe files? Em português: Como converter arquivos .jar para .exe?

2675

what is mean by synchronization?

BOB Technologies, GCPL,

3 6538

what is mean by thread lock?

Infosys, TCS,

2 6477

what is interface in java ?can you explain with simple example?and what is the difference between abstract and interface?

HCL,

2512

Un-Answered Questions { Java J2EE }

Explain abstract class in java?

1073

What are different ways for authentication of servlet?

1089

What is the use of dao in spring?

401

How can an application do a jms operation and have it succeed, independent of the result of the transaction? : BEA Weblogic

1033

What is singleton class example?

1032

Explain what is an EJB Context?

1044

What is jdbc odbc?

992

Why main method is static in java?

1186

What is connection pooling and why it is used?

1004

What is meant by stereotype annotation?

453

What is database connection pooling? Advantages of using a connection pool?

1060

What is java swing components?

1113

Can we define constructor in inner class?

1007

What is the difference between merge and update method?

496

What is stateless ejb?

952

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