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

How we can know whether proxy server up or not?

TCS,

3 9557

we cannot create an object of interface but we can create a variable of it

1 5548

There are three interfaces A,B & C. A extends B, B extends C, and C extends A.Is it multiple Inheritance? please anybody help me.....

5 10691

How many Action classes have been used in your project? Differences between struts 1.1 and 1.3?

Oracle,

2965

What is the Spring2.5 MVC Navigation flow?

IBM,

1 6408

abstract class A{ int list []=new int [100]; A(int x,int y){ rondom n=new rondom(); for (int i==;i<100;i++); list [i]=x+r.next int(y-x+1); abstract sort (); abstract binary sarch(int temp); class B extends A{

3 5185

Use of private variable while creating properties ???

1 3950

Which one should we prefer while using bean ? managed bean annotation or faces-config

1 3583

Since we can create managed bean by two ways as, we can define the bean name in faces-config.xml file so that page can use that OR we can write annotation on bean class so that it is automatically assign to page but I want to know which one is good programming practice ? And also mention disadvantage of other which should not prefer ... Thanking you...

ASD Lab,

2284

I am newbie in J2EE & looking for strong basic behind each concept as, Why do we use private access specifier before each variable of type property bcoz ultimately to access it outside the class we use public method as getter & setter ? If we use getter & setter to access it outside the class so better we make variable as public so that it is easily available outside of the class... Please guide me why do we use as private ????

CTS,

3 6106

Can we override the main method?

4 7598

make a method which any number and any type of argument and print sum of that arguments.....

1818

can write code for serialization ?

HCL, MegaSoft,

1 4131

Difference between ActionErrors and ActionMessage?

iGate,

1 7337

how many methods are there in RequestPrccesor class?

Infosys,

2 8312

Un-Answered Questions { Java J2EE }

what is object-oriented programming in java?

1049

Explain what are final variable in java?

1075

What are the advantages of using hibernate over jdbc?

313

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

400

Can you use a foreign jms provider to drive an mdb transactionally? : BEA Weblogic

977

Which of the classes will have more memory allocated?

976

which node is used to change the message in the flow?

888

What is substring in java?

1224

What is t3 protocol?

940

How you will enable front-end validation based on the xml in validation.xml?

1089

Is @override annotation mandatory?

419

How can default JVM be changed to other?

1031

Which swing methods are thread-safe?

1116

What is the main purpose of serialization in java?

1033

Why is orm used?

339

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