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

I dont want to use serialzable in java is there any another concept so plz tell me

WDC,

3 6753

explain the collection in java

WDC,

1 4534

How to implement Singleton

DELL,

6 9952

what is core dump? diff b/w core dump and c dump?

IBM, TCS,

1 8872

what is digital certificate?

HCL, IBM,

3 10017

How does marker interface provides functionality to the implemented class ? or How dose maker interface gets the functionalities as serialization or cloning.

Cap Gemini,

4 8922

What are different Methods and Classes written in a Session Bean

DELL,

1 5970

what is collections in java?

4 6413

how can i kill thread without stop() and destroy()

1 5380

can i call multipule form beans in Action class?

Wipro,

1 5764

Why sleep()is in Thread and wait() in Object class? Why can't I have both in one class or vice versa?

1 6023

This is related to threads. I have a class with synchronized method m1(). Can I create different instances of this class and execute the m1() for different threads?

3 6071

What compiler do not do if we create our own constructor?

HCL,

5 8499

Which method is called when reference variable is passed in system.net?

HCL,

2408

Difference Between getRequest and PostRequest?

HCL, TCS,

8 11886

Un-Answered Questions { Java J2EE }

Why collection doesn’t extend cloneable and serializable interfaces?

1103

Define canvas?

984

What is use of super keyword?

966

What is jpa and spring data jpa?

422

What are spring boot starter projects? : Spring Boot

409

How many characters is 16 bytes?

997

What are the ways by which hibernate can be accessed using spring?

518

What are "methods" and "fields"?

1018

What is a variable declaration?

978

Is string passed by reference in java?

999

What are parsers? Dom vs sax parser.

1057

How we can execute any code even before main method?

1140

Which memory space does thread stack get allocated from?

896

What is the difference between RMI registry and OS Agent?

1144

What is spring’s ioc container?

395

For More Un-Answered { Java J2EE } Questions Click Here