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 the difference(or similarity if there are some) between object and a variable?

ME,

4 6702

what is ACID test for fresh engineers??what is the pattern??

2795

what are literals in java?

2 5242

i need java 1+ experience resume on java developer kindly send me my mail id:srikanthreddy1.marla@gmail.com

1 7496

How many controlers are there in spring? Plz send me ans

HCL,

1 5034

When we r go to abstract class and when we go to Interface? i have confusion this question while in interview plz clarify

HCL, Photon,

3 7122

Can we add JBoss server instance to weblogic cluster?

Accenture, IBM,

1 5812

When should I use abstract classes and when should I use interfaces?

2 5700

Which Taglibraury you used in your project? plz send me ans....which we r using generally

2 5083

What is basic concept of static in java ?

iGate,

1 6494

How to call the m1() method of Base class in below snippet ? class Base { public void m1() { System.out.println("Base m1 "); } public void m2() { System.out.println("Base m1 "); } } ====================== class Derived extends Base { public void m1() { System.out.println("Derived m1"); } public void m3() { System.out.println("Derived m3"); } public static void main(String[] args) { Base ob=new Derived(); ob.m1(); //System.out.println("Hello World!"+ob.m1()); } }

Cap Gemini, TCS,

6 9291

In HashSet duplicates are allowed while adding to the HashSet, but while retreiving the object from HashSet is not shown the duplicate values, WHY ?

Cap Gemini,

2 7284

When to use the Collection Classes(HashSet, LinkedHashSet, TreeSet....etc) in real time scenario ?

Cap Gemini,

1 10065

Explain the OOPS concept in Realtime Scenarion ? Take example as CAR. Please explain indetail ?

Cap Gemini,

3057

What is the difference between static synchronize() metod and synchronize() method?

Polaris,

1 3688

Un-Answered Questions { Java J2EE }

What is odbc jdbc?

1006

What is the java persistence api (jpa)?

433

What is the multi-catch block in java?

1043

What is a generic type?

1011

How to configure a DB connection pool ?

1130

What is jms message queue?

854

What is @embeddedid?

526

What is the purpose of @keyproperty annotation annotation?

981

What is the default annotation for a property in hibernate?

377

What are swings awt?

935

Describe secure socket layer (ssl)?

1011

What are the swing components?

950

List types of storage classes in java?

1155

What is the difference between client and server database cursors?

1181

Explain bean in spring and list the different scopes of spring bean?

413

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