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

Convert a binary search tree to a sorted doubly linked list inplace.

Amazon,

1 9896

why there are multiple catches for a try block.don't tell me that there can be multiple exception of a code segment that's why.tell me the real fact behind this.

4 8770

Which are thin and thicK wrapper Class's in Java?

1 8460

Hi, This is ravi i have a question like this i have string "UNDERSTAND" now i want to count the letters how many times it occures.i.e from the above string the out put should be like this U-1,N-2,D-2,E-1,R-1,S-1,T-1,A-1. how can i achieve this Thnaks in advance for your response ..

7 8351

Why do inner class cannot have static declaration except static nested class?

TCS, Wipro,

2 12685

What is the basically use of finally while we know it is always executed but why?

Oracle, TCS,

5 9413

Why can't we make jsp as a controller and action servlet in struts?

TCS, Wipro,

8 12722

What is the difference between error and exception and explain in simple words not whatever is given in the book.

7 12999

What is the differnence between String Buffer and String builder despite having knowledge that String builder is faster than String Buffer and last one is threadsafe.please tell another important difference.

IBM,

3 8807

What is the servletcontext listener and what is JspContext and page context pls tell in simple words.

IBM,

1 6470

define System.out.println(); what is the meaning!

Accenture,

19 41334

what is domian and how can it work ?

HCL,

6 13635

What is trouble shoot in weblogic

HCL, IBM,

5 18168

whats string ?

HCL,

10 12300

After compilation of java program we'll get .class code. If it's generated in OS Windows XP will it work on OS Linux? If yes why? If no why?

Aricent,

5 9682

Un-Answered Questions { Java J2EE }

How to convert string to char and vice versa?

1032

What is chunk in spring batch?

444

List some important characteristics on jre

1097

What is generic servlet class?

1094

password, is stored in as plain text. What can I do to protect my passwords?

998

Do you know what is the function of managedconnection.addconnectioneventlistener() in web logic server?

1075

What are the spring containers?

540

What is passed by reference and pass by value ?

1061

What is difference between public static and void?

1047

What does index mean in java?

1017

Differentiate between vector and array list.

1092

what functionality does caching proxy server provides?

942

How is a servlet implemented in code?

1101

What is a spring in java?

461

what are RemoteObjects?

2766

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