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

Which is the better framework for web applications, struts or spring, and why?

IBM, TATA,

1 4755

Java support call by reference (pass by reference) ?

HCL,

1 4510

How to deploye the java application in web logic server please brief explain with screen shot please help me ?

4 9154

What is private static final long serialVersionUID = 1L;

Google,

3 16688

System.out & System.in are final static data member of System class but we can change there reference through setOut() & setIn() method how...

FCS, TCS,

2 6066

difference between vectorlist and hash

TCS,

1 4239

Does WLS supports CORBA?

Cap Gemini,

2 8042

why HashTable not allow null key and value

Crimson Logic,

2 22481

why string constant pool in java

TCS,

2 8977

why Bean class implements all business method of Remote interface but bean bean class not implements the remote interface

Polaris,

2471

why top level class could not be static

L&T,

3 13102

The following program is Overloading or Overriding? public class PolymorphismEx { public int sampleMethod(int a) { return a; } public String sampleMethod(int a) { return "Is it Overloading or Overriding???"; } }

Ness Technologies, TCS,

4 7629

I Have a class abstract with one abstract method, so that method should override in the subclass, but i dont want to override, if i am not override what will happen? If compilation will occur then i dont want to give compilation error, then what we need to do??? See the sample program. public abstract class AbstractExample { public abstract void sampleMethod(); } public class AbstractExampleImple extends AbstractExample { }

Mphasis,

2 6044

what is the use of module in weblogic

Polaris,

1 3605

is it mandatory to deaclare all variables public static fianl in interfaces?if i declare like in the below program, public interface A { public static final int I=0; int j=0; } in interface A,what is the difference between I,j?

2 4560

Un-Answered Questions { Java J2EE }

Is 0 an irrational number?

1068

What are the various struts tag libraries?

942

What is fail first in java?

1205

Is a class subclass of itself?

1088

What is the bean life cycle in spring bean factory container?

376

What is the purpose of file class?

1025

What is logback?

393

Is nan false?

979

Can I reuse the session in hibernate?

470

How primary key is created by using hibernate?

426

What does the jdbc resultsetmetadata interface?

948

What are the common implementations of the application context ?

407

How do you pass by reference?

1060

Can we learn spring boot without spring? : Spring Boot

401

Is jdbc a middleware?

951

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