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

Core Java Interview Questions

Questions Answers Views Company eMail

Can a class extend abstract class or interface? why

Wipro,

4 9482

What is the difference between Access Modifier and Access specifier?

1 7027

Is it possible to write method inside method

L&T,

4 11753

what is the default value of a variable char?(If not assigned)

4 7211

Write a java program to get a string of words and print the numbers of each word count in descending order

Logica CMG, Subex,

11 30346

Where can I find data structures question and answers with comprehensive working code written in Java

Amazon,

2374

if the memory capacity is 700 presently occupied by process is 690. then another process request space(40) how this situation handled in java.

Wipro,

4 6784

what is the logic inside any default constuctor?

2 4300

How TreeMap sorts the objects inside it?? suppose if have include one employee object and one car object. On what basis it will sort?

5 14451

Java is based on pass by reference or pass by value ..

L&T, Wipro,

6 10667

difference between arraylist and linkedlist otherthan performance

L&T,

2 10540

why pointer is not used in java?

3 11599

what are the difference between Java and .Net?

5 8340

can any body body expalin best definitions & best real time exaples for opps concepts.

Accel,

2220

What is map and hashmap? also tell the difference.

1 4252

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Un-Answered Questions { Core Java }

make a method which any number and any type of argument and print sum of that arguments.....

1754

Explain about instanceof operator in java?

1001

Can we override final method?

948

Do loops java?

965

Is minecraft java edition free?

1076

Can you instantiate the math class in Java?

1029

What is a parameter in java?

956

What is factor r?

920

Can we access the non-final local variable, inside the local inner class?

973

Can we able to pass objects as an arguments in java?

974

what is mutual exclusion? How can you take care of mutual exclusion using java threads? : Java thread

1075

Can an interface be final?

981

How to change the priority of thread or how to set the priority of thread?

997

Are arrays passed by reference in java?

882

What’s a deadlock?

1057

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