Java J2EE Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Java J2EE Interview Questions

Questions Answers Views Company eMail

What is role of void keyword in declaring functions?

Adobe,

1050

Define array. Tell me about 2-D array.

Agilent,

1050

Give an example of call be reference significance.

Agilent,

1030

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,

1002

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

Akamai Technologies,

1056

Define Multiprogramming and Multiprocessing in java.

Akamai Technologies,

1148

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,

1008

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 }

How can you make sure that your singleton class will always return single instance in multi-threaded environment?

1027

In java how do we copy objects?

1048

Why is hibernate called orm?

403

What is the use of rowmapper in spring?

484

Is j2ee and jee same?

934

What are the four components of j2ee application?

1009

How do I become a java developer?

943

Can we have 2 main methods in java class?

1023

What is distributed application?

949

Describe the term diamond problem.

1035

What is dialect in hibernate?

471

Difference between save and saveorupdate?

993

What are the differences between stored procedure and functions?

1036

What port does jdbc use?

968

Can you call one constructor from another if a class has multiple constructors?

1036

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