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 9663

What is the difference between Access Modifier and Access specifier?

1 7159

Is it possible to write method inside method

L&T,

4 11981

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

4 7392

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 30790

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

Amazon,

2419

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 6993

what is the logic inside any default constuctor?

2 4418

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 14653

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

L&T, Wipro,

6 10928

difference between arraylist and linkedlist otherthan performance

L&T,

2 10681

why pointer is not used in java?

3 11742

what are the difference between Java and .Net?

5 8530

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

Accel,

2269

What is map and hashmap? also tell the difference.

1 4328

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Un-Answered Questions { Core Java }

How many types of operators are there?

986

What is gc()?

1070

Explain the use of sublass in a java program?

1025

What is the final access modifier in java?

1079

What are the escape sequences in java?

1029

Why is stringbuffer thread safe?

1048

What is difference between throw and throws ?

1139

Can an interface implement another interface?

1036

which is advanced deep technology in java launched by the sun microsystem??? The answer is very logical If u need correct answer mail me at priya_gupta@gmail.com

3663

What is a values collection view ?

1087

How infinite loop is declared?

1021

Is string an object?

1119

What are data types in programming?

992

What is a method type?

1006

Differentiate between a constructor and a method? Can we mark constructors final?

1198

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