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

Hi friends, In JDBC 4 drivers are there among this which driver is best and why it is best.Which driver is most commonly used in web applications.

6 9554

Hi Friends, am new to struts.I read that " you can store variables in xml file(properties file) and for future enhancements we just call properties file . Now i want to implement this , where can i call properties file to enhance my application. My question is where this properties file will be called.

1 3599

Hi Friends, can u give me Real Time example for interface and abstract class.(With Banking Example)

4 14834

In DAO we are writting sql queries , how it is possible with creating and closing database connections.

1930

when to use ArrayList and when to use HashMap in webApplication.

1 4704

what is the diffrence between weblogic server 8.x/9.x/10.x?

HCL, TCS,

7 37157

Difference between Weblogic server and websphere server?

IBM,

1 9424

what is main difference between architecture,framework and design pattren

3 15868

Hi Friends, can you explain instance in java. In general instance means "occurence of something" . In java what is instance.

4 6049

Hi Friends, I am beginner in java. what i know about synchonized keyword is,If more that one 1 thread tries to access a particular resource we can lock the method using synchronized keyword. Then after that how the lock is released and how next thread access that.Please explain with example.

5 6346

Hi Friends, can you give difference between extending thread class and implementing runnable interface.

4 6556

what is an object class?Explain its methods?

6 11910

Hi Friends, I am new to java. Can u explain about thread concept.How i know one thread is locked, and how can i force or acquire another thread for lock . Finally how to know thread is released from lock. Explain types of lock(like method level and block level) in thread.

1 3664

I have a sorting issue with a Hashmap. My constraint is that I MUST use the Hashmap and work with existing code. I do a database query and place the results in a Hashmap. When I iterate thru the Hashmap, it loses the original alphabetical sorting done by the database. So, my problem is that I must sort the results coming out of the Hashmap which is then placed into another class.

1 4504

What is Session and cookies?Explain in detail with an example?

Accenture, CTS,

4 19214

Un-Answered Questions { Java J2EE }

What are the steps required to execute a query in jdbc?

942

How the metacharacters are different from the ordinary characters?

1021

What is java instanceof operator?

1040

Explain the concept of connection pooling feature of ejb container?

969

What are class paths? How can they be set?

1053

Explain xml schema-based aspect implementation ?

441

Why is stringbuffer not immutable?

1077

How would you use Bubble Sort to sort the number of elements?

1004

How to perform merge sort in java?

1057

What’s the difference between @component, @controller, @repository & @service annotations in spring?

461

What is stateful session bean?

1063

Does chrome use java?

961

What is the use of spring cloud?

425

Why packages are used?

1536

What are the different types of extension interface that is present in hibernate?

540

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