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 downcasting?

1119

Is jdk required on each machine to run a java program?

1304

Which arithmetic operations can result in the throwing of an arithmeticexception?

1027

Why generics are used in java?

1060

Define how destructors are defined in java?

1033

Which number is denoted by leading zero in java?

1247

What is an enumeration?

1072

What is a layout manager and what are different types of layout managers available in java awt?

1249

What is an object’s lock and which object’s have locks?

967

What will be the output of round(3.7) and ceil(3.7)?

1121

How do you decide when to use arraylist and linkedlist?

993

Which object oriented concept is achieved by using overloading and overriding?

1120

What are the advantages of arraylist over arrays?

1095

Which class represents the socket that both the client and server use to communicate with each other?

1047

What is the difference between yielding and sleeping?

1119

Un-Answered Questions { Java J2EE }

List some of the benefits of ioc.

517

What is the use of aop?

435

What is final access modifier in java?

1155

Can we create an object if a class doesn't have any constructor ( not even the default provided by constructor ) ?

1095

How do the wls jms 6.1 server/destination message maximum and threshold values work?

827

What Are The Various Types Of Weblogic Installations ?

1075

What is spring boot rowmapper? : Spring Boot

464

What is the common usage of serialization? What exceptions occur during serialization?

1135

What are the benefits of using servlet over cgi?

1077

What is called spring mvc?

423

What is the use of cglib?

404

What will happen if there is a default method conflict as mentioned above and we have specified the same signature method in the base class instead of overriding in the existing class ?

970

why are there separate wait and sleep methods? : Java thread

1032

What is the websphere application server console and what is its role? What is the default url and port for accessing it?

870

What is java’s garbage collected heap?

987

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