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 14720

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

3 5495

why java main method is given as static method?

2 4494

what is Abstract DataType?

1 3584

why operator overloading is removed in java?

1 4206

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

2 4632

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

Vimukti Technologies,

3 7368

please write java program of instanceOf keyword implementation

TCS,

2 5088

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

1897

How to extract HashMap values?

Marlabs,

5 12077

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

Amdocs,

2 7070

Difference between hashCode() & equals()?

HCL,

3 8423

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

1 3762

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

HCL,

2280

Definition for connection pooling?

3 5375

Post New Core Java Questions

Un-Answered Questions { Core Java }

What is the difference between delete and delete[]

1651

What does indexof return in java?

1048

Explain the difference between abstraction and encapsulation.

1031

How do you achieve singleton?

1028

What is collection class in java? List down its methods and interfaces.

1031

What is the difference between class & object?

1061

Which class is the superclass of all classes?

1154

is there a separate stack for each thread in java? : Java thread

1034

What is an accessor?

1766

What are java packages? What's the significance of packages?

1407

What is a newline character in java?

1088

Difference between abstract and concrete class ?

1266

Is minecraft java edition free?

1170

How many types of operators are there?

1031

What is a singleton puppy?

1040

For More Un-Answered { Core Java } Questions Click Here