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

Core Java (6529)
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Servlets (804)
Struts (701)
JDBC (771)
JMS (324)

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J2EE (485)
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Websphere (573)

Java J2EE Interview Questions

Questions Answers Views Company eMail

what is difference between interface and abstract class..?

4 6956

how many JDBC drivers ?name them?

CTS, Idea,

6 12661

what happens if connection is not closed?

CTS,

7 25164

wat happen when the connection is nt closed in jdbc n what vl happen when i interchange in executequery n execute statements

2 5108

what happen if the private constructor is written in a claass

6 9469

How to make a method thread safe without using synchronized keyword?

Persistent, Societe Generale,

8 34506

what is the collable collections in java?

Persistent,

2 12386

we have syntax like for(int var : arrayName) this syntax is to find whether a number is in the array or not.but i want to know how to find that number's location.

2030

Can a class extend abstract class or interface? why

Wipro,

4 9649

what is java virtual machine

4 8209

What is the difference between Access Modifier and Access specifier?

1 7155

Is it possible to write method inside method

L&T,

4 11975

what is the default value of a variable char?(If not assigned)

4 7377

Write a java program to get a string of words and print the numbers of each word count in descending order

Logica CMG, Subex,

11 30774

Where can I find data structures question and answers with comprehensive working code written in Java

Amazon,

2415

Un-Answered Questions { Java J2EE }

What’s the difference between constructors and other methods?

997

What is boolean query?

982

Explain about instanceof operator in java?

1051

What is the difference between the @component, @repository and @service annotations in spring?

458

what is difference between equals and ==?

1061

What is the difference between jdbc and jndi?

1006

What does exp mean in math?

989

What is type conversion in java?

1037

What are the inheritance mapping strategies?

459

What is the difference between compiler and jvm?

1051

What is maven in spring framework?

474

If we opened Windows Internet Explorer 4 times, does it starts 4 processes or 4 threads?

2207

What is 'throws advice' in spring?

382

Which data type is class in java?

1013

What is java used for in technology?

918

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