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 9989

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 8959

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

1 8536

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 8586

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

TCS, Wipro,

2 12823

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

Oracle, TCS,

5 9605

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

TCS, Wipro,

8 12988

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

7 13206

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 8962

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

IBM,

1 6538

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

Accenture,

19 41946

what is domian and how can it work ?

HCL,

6 13887

What is trouble shoot in weblogic

HCL, IBM,

5 18386

whats string ?

HCL,

10 12608

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 9856

Un-Answered Questions { Java J2EE }

Can we return resultset in java?

990

explain different ways of using thread? : Java thread

1079

hi actully i hav form columns with origin and destination names .as like as i need to create one more column with name amount. my requirement is when i select origin and destination columns automatically i need to get amount from database.how can i. please tel me with relative code

2866

i want test pattern of zylog company and some examples also

2859

What is an object in java and how is it created?

1129

What is latest hibernate version?

486

Hi frnd can i any one kindly can post for me portlet,hibernate and spring example application and with flow explantion configuration using Jdeveloper.and related links ar tutorials kindly please send me .its urgent for me .thanks in advance...........else can any one send to kondaiah.goddeti@gmail.com

2259

Write a program to find the whether a number is an Armstrong number or not?

1095

How to sort array in descending order in java?

989

What is lazy class?

484

What do you know about validation plugin ?

1026

Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example

2659

What is a constructor overloading in java?

1123

what are the different modes of archival? Explain each mode in two lines each?

996

How can you inject java collection in spring?

505

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