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 4507

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 16687

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 8041

why HashTable not allow null key and value

Crimson Logic,

2 22481

why string constant pool in java

TCS,

2 8975

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 13100

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 7627

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 3604

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 4559

Un-Answered Questions { Java J2EE }

Can we use switch statement with strings?

1045

Why do I get a duplicate name error when loading a jar file?

1150

What is difference between save and persist method in hibernate?

424

Does apple use java?

950

Is the infobus client side only?

1114

What is the difference between the http servlet and generic servlet?

1145

Why are springs better than struts?

1152

What are the advantage of swing over awt?

1018

What is a parameter in a function?

997

What is the size of int?

1085

Explain java coding standards for methods?

1042

Will the jvm load the package twice at runtime?

1100

What is orm in spring?

444

Is null a string in java?

1075

Can we have static methods in an interface?

1057

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