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 Tomcat 4 & Tomcat 5?

IBM, TCS,

6 13978

what is difference between colection and collections?

Amdocs, IBM, Infosys, Ipog Software, Polaris, Tech Mahindra,

25 71843

what is Directory Structure of webapplication?

CTS, Virtusa,

8 21365

Why we can not force Garbage Collection?

7 14970

I have a class which is abstract which contains only the abstract methods. This is similar to an interface. Then, if i have given a choice to choose one of them. Which one i have to choose and why?

4 7413

In connection pool,when 100 clients are requesting, in pool 100 objects is there, when another client is making request how it will work

3 6973

How multipleInheritance is possible in java?

Satyam,

18 23137

Even though Servlets and JSP are web based concepts .wht is the use of using Struts using then

TCS,

8 14089

How to add ms-word file in struts at the same time how to add images

1 5884

how to write my own Action servlet by extending pre-defined Action servlet in struts config.

Sony,

2 11518

explain me with a code snippet about the generation and handling of null point exceptions.

1 4515

if u havea .class file ,how can u say whether it is servlet or not ,dont use java decompliler

Polaris,

4 8315

We have two methods to create methods the threads. 1. Implementing runnable interface 2. Extending to thread class and overriding run method. Among these two which one is better and why? Please explain me in detail.

2 6272

what is the use of cvs in struts?

2 7750

we have 7 jsp pages .At last page we have a submit button when we click it it will store all jsps data which we provide will store into database. when we starting providing data in jsp pages when we are at 3rd jsp at that time sessions timeout where the data will be store which we r provide in last two jsps?

2 6604

Un-Answered Questions { Java J2EE }

Is swing still used in java?

967

How do you autowire annotation in spring?

519

List the limitations of auto wiring.

406

What is the weblogic server?

982

What are the steps used to setup dispatch action?

1041

How vendor Naming registry supports JNDI?

2205

Where can I get help with struts?

1004

What are the different types of multitasking?

1108

What is the use of spring cloud?

427

Why is there no polymorphic-type response from a create () or find () method?

985

why we use merge option in hybernate pls give a ex snippet

1997

How can forward action be used to restrict a strut application to mvc?

980

How do you remove duplicates from an array in java?

956

What are the important interfaces in hibernate?

361

Why swings are called lightweight components?

1054

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