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

Can we store variables in local blocks?

Global Logic,

1344

Write a program to search a number in the given list of numbers.

Honeywell,

1027

What is a default constraint?

HCL,

1065

What isan abstract class and when do you use it?

Genpact,

1 1591

What do you understand by Header linked List?

Genpact,

1097

Difference between current previous versions of Java?

Atos Origin,

1015

What is a Presistent Object?

InfoAxon Technologies,

1231

How do you find the maximum number from an array without comparing and sorting?

BlackRock,

1118

What do you mean by a JVM?

GE,

1241

Explain the selection sort algorithm and state its time complexity?

Flextronics,

1013

Give me an example of array and linked list? Where they can be used?

Ericsson,

1001

What is meant by 'bit masking' in java?

DELL,

1182

If we allocate the memory using 'new' & de-allocated using 'free' then what will happen?

CDAC,

1036

What is an interoperable application in java ?

HCL,

993

These static constructors are correct ? class A { statc intA() { } static A(int x,int y) { } static A(int x) { } }

HCL,

1084

Un-Answered Questions { Java J2EE }

What is charat java?

954

What are the types of advice in aop?

378

What is an ejb container?

960

What is the query used to display all tables names in SQL Server (Query analyzer)?

1063

Enlist the CallBack methods of Entity Bean.

1003

What is database deadlock ? How can we avoid them?

1049

Can we use different return types for methods when overridden?

989

What is difference between ioc and di?

619

Why is my jms work not part of a user transaction (i.e., Called within a transaction but not rolled back appropriately)? How do I track down transaction problems? : BEA Weblogic

905

Where are local variables stored?

962

What are the differences between Ear, Jar and War files? Under what circumstances should we use each one?

977

What are the major advantages of internal iteration over external iteration?

1043

Can static method access instance variables ?

1126

Is there any tag in htm to upload and download files?

1043

Find the value of a specified element of the array arr[i] where 0 <= i <= n-1

978

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