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

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Struts (701)
JDBC (771)
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Java J2EE Interview Questions

Questions Answers Views Company eMail

If your team member writes code with lots of static variables and static methods, will it cause any side effects?

KPIT,

3 7497

If I have 1000 objects and my requirement is to sort them quickly, then which collection would you recommend and why?

KPIT,

5 8848

I have a Person object with 5 variables and I want to store them in a file called Person.txt. What should I do?

KPIT,

3 6856

There is a Banking application. It has 2 types of account, Savings and Current. Write a method calculateInterest by passing an ArrayList of these account objects and calculate Interest accordingly. Write code for this situation

ABC, KPIT,

1 3528

If two threads call a static method at the same point of time, what will happen?

KPIT,

3 8834

There are 2 methods in a class. Both have the same method signature except for return types. Is this overloading or overriding or what is it?

KPIT,

9 13713

There are 2 classes, 1 LandAnimal and another WaterAnimal. There is another class Animal which wants to have the properties of both LandAnimal and WaterAnimal. How will you design this situation?

KPIT,

6 10740

I have a String s = java; What is the output when I say s.replaceAll('j', 'k'); Also what is the value of s after replacing?

KPIT,

8 11704

If you are reviewing the code of your team members, what points will you look at, assuming the performance of the application is not so great

KPIT,

2 6264

How will you convert an ArrayList to Arrays?

KPIT,

4 9287

steps to connect with Oracle Databse using TYPE-2 Jdbc driver.

3 11948

how do we get the connection from connection pool

1 4343

what are the methods of an object class?

3 6374

can u give one sinario when you use Abstract Class and When you use Interface.

ITC Infotech,

5 9765

What does 'stub' mean in weblogic server?

3 22491

Un-Answered Questions { Java J2EE }

Difference between session and sessionfactory in hibernate?

435

What are wrapper classes in java?

1068

What is httpservlet and how it is different from genericservlet?

1101

Can we overload the constructors?

994

How do you sort a set in java?

916

How to achieve mapping in hibernate?

360

What is the difference between compare and compareto in java?

1028

Why is dao used?

427

What are the elements of java?

1010

how to create constants in java?

1081

What is the application context?

376

Variables used in a switch statement can be used with which datatypes?

997

Explain inner beans in spring.

414

What is the requirement of servlet config and servlet context implemented and how are they implemented?

1006

What is build file?

994

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