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

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Java Related Interview Questions

Questions Answers Views Company eMail

Hi Friends, can u give me Real Time example for interface and abstract class.(With Banking Example)

4 14882

In DAO we are writting sql queries , how it is possible with creating and closing database connections.

1950

when to use ArrayList and when to use HashMap in webApplication.

1 4740

what is the diffrence between weblogic server 8.x/9.x/10.x?

HCL, TCS,

7 37247

Difference between Weblogic server and websphere server?

IBM,

1 9454

what is main difference between architecture,framework and design pattren

3 15929

Hi Friends, can you explain instance in java. In general instance means "occurence of something" . In java what is instance.

4 6135

Hi Friends, I am beginner in java. what i know about synchonized keyword is,If more that one 1 thread tries to access a particular resource we can lock the method using synchronized keyword. Then after that how the lock is released and how next thread access that.Please explain with example.

5 6410

Hi Friends, can you give difference between extending thread class and implementing runnable interface.

4 6631

what is an object class?Explain its methods?

6 11988

Hi Friends, I am new to java. Can u explain about thread concept.How i know one thread is locked, and how can i force or acquire another thread for lock . Finally how to know thread is released from lock. Explain types of lock(like method level and block level) in thread.

1 3704

I have a sorting issue with a Hashmap. My constraint is that I MUST use the Hashmap and work with existing code. I do a database query and place the results in a Hashmap. When I iterate thru the Hashmap, it loses the original alphabetical sorting done by the database. So, my problem is that I must sort the results coming out of the Hashmap which is then placed into another class.

1 4550

What is Session and cookies?Explain in detail with an example?

Accenture, CTS,

4 19269

I need to know about complete topic in java's collections i with an examples

TCS,

1 5107

Real Time sample code for Encapsulation and Abstraction. where to use abstract and where to use specifies like public private.

2 9468

Un-Answered Questions { Java Related }

What is a java application client?

1081

What is the use of flag?

1109

How do I know which jdbc driver to use?

1037

Where are the local variables stored?

1083

What is the main function in java?

1084

What is heterogeneous in java?

992

What are the advantages of hibernate framework?

386

Explain about OOPS concepts and fundamentals.

1066

What is functional interface in java?

1064

What are the new features in java 8?

1043

when should you use stringbuilder class in a program?

998

What is persistence object hibernate?

448

How do you create a method in java?

1027

What is JDBC API and when do we use it?

1062

What is Gang of four design patterns

1090

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