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 8706

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

1 8440

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 8253

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

TCS, Wipro,

2 12635

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

Oracle, TCS,

5 9351

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

TCS, Wipro,

8 12632

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

7 12909

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 8769

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

IBM,

1 6439

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

Accenture,

19 41093

what is domian and how can it work ?

HCL,

6 13542

What is trouble shoot in weblogic

HCL, IBM,

5 18110

whats string ?

HCL,

10 12186

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 9608

Un-Answered Questions { Java J2EE }

What are the different access modifiers available in java?

1046

Explain the j2ee tiers.

864

What are the different types of statements? How we can you use preparedstatement.

965

What is the memory leak in java?

1042

How can we create deadlock situation in servlet?

1433

What are deployment descriptors?

1114

Can we call the constructor of a class more than once for an object?

1097

What was java originally called?

962

What is identifier in java?

1117

How many types of array are there?

1011

What is the null?

1023

what is message driven process?

953

Which is better stringbuilder or stringbuffer?

940

How to enable logging (log4j) in hibernate?

403

What is a dot notation?

1036

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