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 14551

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

3 5358

why java main method is given as static method?

2 4399

what is Abstract DataType?

1 3484

why operator overloading is removed in java?

1 4140

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

2 4499

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

Vimukti Technologies,

3 7241

please write java program of instanceOf keyword implementation

TCS,

2 4978

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 11787

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

Amdocs,

2 6909

Difference between hashCode() & equals()?

HCL,

3 8258

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

1 3692

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

HCL,

2196

Definition for connection pooling?

3 5235

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Un-Answered Questions { Core Java }

Why arraylist is not synchronized in java example?

1058

What is a static class in java?

1006

What is contractor means and methods?

995

What is java oops?

1066

What is the order of arraylist in java?

1129

What's the base class of all exception classes?

1058

What happens to the Exception object after handling an exception?

2367

What is anagram word?

993

What is java util collection?

1080

How do you compare two objects?

932

Can a constructor be protected?

1085

What is hashset in java?

1127

What is the difference between the final method and abstract method?

1041

What is the function of static in java?

1071

In how many ways we can do exception handling in java?

993

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