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Core Java Interview Questions
Questions Answers Views Company eMail

what are the major differences between jdk1.4 and jdk1.5?

Cap Gemini, Crimson Logic, Infosys, TCS, Tenth Planet,

2 13436

In treeset we add same object ...what will be the out put

 3 4191

why java main method is given as static method?

 2 3450

what is Abstract DataType?

 1 2844

why operator overloading is removed in java?

 1 3429

wat is final...? wat is finally...? wat is finalize....? difference between " final and finally and finalize "...?

 2 3527

can we override the main() method in java????

Vimukti Technologies,

3 5888

please write java program of instanceOf keyword implementation

TCS,

2 3720

Hi i am creating desktop application in that i want calling to mobile number. i have java telephone api (JTAPI) but i dont understand how it configure & use plese help me

 1354

How to extract HashMap values?

Marlabs,

5 9898

How to Create A Wapper Class in core Java and Why are Use in java?

Amdocs,

2 5791

Difference between hashCode() & equals()?

HCL,

3 6959

What is the reason that multiple inheritance is not possible in java??

 1 2890

Why are the destructors for base class and derived class called in reverse order when the program exits

HCL,

1694

Definition for connection pooling?

 3 4149

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Un-Answered Questions { Core Java }

What is the base class for error and exception?

544

What is the difference between error and an exception?

561

what r advatages of websphere? & how to deploy?

1628

What’s the difference between the methods sleep() and wait()?

532

How many bits is a double?

522




In the below example, what will be the output?

586

What is the use of bufferedreader?

524

Can a class extends itself in java?

525

What is function and its uses?

554

How do I convert a string to an int in java?

543

What is a functional interface?

537

What is the purpose of format function?

616

What is the buffer limit?

548

Write code of any action class?

540

What is string in java is it a data type?

527

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