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

Java J2EE (14736)
J2ME (151)
Java Related AllOther (507)

Java Related Interview Questions

Questions Answers Views Company eMail

How can we create a object of a class without using new operator.

Infosys, Nokia,

1 7713

I dont want to use serialzable in java is there any another concept so plz tell me

WDC,

3 6761

explain the collection in java

WDC,

1 4542

How to implement Singleton

DELL,

6 9962

what is core dump? diff b/w core dump and c dump?

IBM, TCS,

1 8875

what is digital certificate?

HCL, IBM,

3 10024

How does marker interface provides functionality to the implemented class ? or How dose maker interface gets the functionalities as serialization or cloning.

Cap Gemini,

4 8931

What are different Methods and Classes written in a Session Bean

DELL,

1 5972

what is collections in java?

4 6423

how can i kill thread without stop() and destroy()

1 5381

can i call multipule form beans in Action class?

Wipro,

1 5767

Why sleep()is in Thread and wait() in Object class? Why can't I have both in one class or vice versa?

1 6024

This is related to threads. I have a class with synchronized method m1(). Can I create different instances of this class and execute the m1() for different threads?

3 6075

What compiler do not do if we create our own constructor?

HCL,

5 8508

Which method is called when reference variable is passed in system.net?

HCL,

2409

Un-Answered Questions { Java Related }

Why do we need data structure in java?

1079

How do you check if a number is a perfect square?

994

Define how objects are stored in java?

1068

Why are there no global variables in java?

1045

How do servlets work?

1044

Can we execute a program without main?

1029

What is correlated subquery?

2330

Tell me the Importent classes in net package?

2001

What is the mvc on struts?

913

Explain the criteria object in hibernate?

418

Write a program to find the greatest of three numbers in java?

1008

What are the factors that the jdbc driver performance depends upon?

973

What is difference between @pathparam and @pathvariable?

660

What is the difference between and merge and update?

378

Is java a pure object oriented language?

970

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