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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 13432

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

 3 4187

why java main method is given as static method?

 2 3448

what is Abstract DataType?

 1 2844

why operator overloading is removed in java?

 1 3427

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 5885

please write java program of instanceOf keyword implementation

TCS,

2 3718

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

 1353

How to extract HashMap values?

Marlabs,

5 9893

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

Amdocs,

2 5791

Difference between hashCode() & equals()?

HCL,

3 6957

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

 1 2888

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

HCL,

1693

Definition for connection pooling?

 3 4149

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Un-Answered Questions { Core Java }

What is the difference between break and continue statements?

540

How is it possible for two string objects with identical values not to be equal under the == operator?

519

What is a marker interface?

563

Is void a wrapper class?

521

How do you check if a character in a string is a digit or letter?

500




Why constructor has no return type?

632

Explain about method local inner classes or local inner classes in java?

561

Why you should not use singleton?

532

Where we write javascript code in html page?

553

What is anagram word?

510

What is ordered map in java?

529

What is the use of coding?

512

What is difference between static variable and global variable?

540

Are arrays immutable in java?

533

What is the difference between hashset and treeset in java?

533

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