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 9879

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 8698

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

1 8436

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 8248

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

TCS, Wipro,

2 12629

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

Oracle, TCS,

5 9341

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

TCS, Wipro,

8 12620

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

7 12896

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 8761

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

IBM,

1 6437

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

Accenture,

19 41071

what is domian and how can it work ?

HCL,

6 13536

What is trouble shoot in weblogic

HCL, IBM,

5 18103

whats string ?

HCL,

10 12169

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 9598

Un-Answered Questions { Java J2EE }

Do I need to import java.lang package any time? Why?

1387

Explain the role of driver in jdbc.

1004

What are the different types of statements in jdbc?

920

How to display arraylist values in java?

1009

What does java ide mean?

1143

What are the components of struts?

965

Can a class have multiple constructors?

1060

What is the name of default jvm that is made used for weblogic?

1056

What is publish/subscribe messaging?

893

What is difference between ejb 1.1 and ejb 2.0?

1005

What is a map in java?

988

Is security a cross cutting concern?

433

When an instance goes in detached state in hibernate?

380

List the different scopes of spring bean?

435

What is the use of stereotypes in spring?

426

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