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

What is role of void keyword in declaring functions?

Adobe,

1052

Define array. Tell me about 2-D array.

Agilent,

1051

Give an example of call be reference significance.

Agilent,

1032

In case of inheritance what is the execution order of constructor and destructor?

Agilent,

1134

What is the difference between a vector & an array list?

Agilent,

1166

Differentiate between nested and inner class in java.

Akamai Technologies,

1003

'A class is a template for an object' explain this statement.

Akamai Technologies,

1056

Define Multiprogramming and Multiprocessing in java.

Akamai Technologies,

1150

Explain an algorithm to find depth of a binary tree.

Akamai Technologies,

1044

Given a singly linked list, how will you print out its contents in the reverse order? Can you do it with consuming any extra space?

Akamai Technologies,

994

How to declare objects of a class ?

Akamai Technologies,

1077

How will you reverse a singly-link list?

Akamai Technologies,

1009

Is linked list a linear or non-linear data structure?

Akamai Technologies,

971

What are the Main functions of Java?

Akamai Technologies,

1092

State the merge-sort principle and its time complexity.

Akamai Technologies,

979

Un-Answered Questions { Java J2EE }

What is default bootstrap port?

1030

Why is method overloading not possible by changing the return type in java?

1007

What is final class?

1024

Why are swing components called lightweight components?

936

What is a key in java?

979

Which services are provided to ejb components by the ejb container?

1140

What is difference between variable declaration and definition?

972

How do you deal property files in servlet?

1075

What is cross cutting concerns in spring?

411

Why do we need aop in spring?

455

Can we initialize the final blank variable?

1090

What is lazy true in hibernate?

398

Why are the objects immutable in java?

988

difference between compute and mapping node?

941

What are externizable interface?

1065

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