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

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 14569

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

3 5364

why java main method is given as static method?

2 4412

what is Abstract DataType?

1 3498

why operator overloading is removed in java?

1 4144

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

2 4511

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

Vimukti Technologies,

3 7255

please write java program of instanceOf keyword implementation

TCS,

2 4992

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

1853

How to extract HashMap values?

Marlabs,

5 11827

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

Amdocs,

2 6925

Difference between hashCode() & equals()?

HCL,

3 8272

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

1 3696

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

HCL,

2207

Definition for connection pooling?

3 5253

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Un-Answered Questions { Core Java }

What is a finally block? Is there a case when finally will not execute?

1077

Can a static class have a constructor java?

984

what is the volatile modifier for? : Java thread

998

How do I enable java in safari?

1035

Can we execute a program without main() method?

1037

What’s a deadlock?

1102

Define iterator and methods in iterator?

966

Explain the meaning of java applet.

1071

What is the use of put method?

954

Does java arraylist maintain insertion order?

994

When throw keyword is used?

1071

Which package has light weight components in java programming?

1143

Can I learn java without any programming experience?

1040

Is null function in java?

1041

What is are packages?

1035

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