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Core Java Interview Questions
Questions Answers Views Company eMail

Can a class extend abstract class or interface? why

Wipro,

4 8807

What is the difference between Access Modifier and Access specifier?

 1 6552

Is it possible to write method inside method

L&T,

4 10856

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

 4 6545

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 28872

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

Amazon,

2175

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 6118

what is the logic inside any default constuctor?

 2 3848

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 13825

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

L&T, Wipro,

6 9709

difference between arraylist and linkedlist otherthan performance

L&T,

2 9930

why pointer is not used in java?

 3 10977

what are the difference between Java and .Net?

 5 7475

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

Accel,

2021

What is map and hashmap? also tell the difference.

 1 3910

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Un-Answered Questions { Core Java }

What is super in java?

749

How do you remove duplicates in java?

726

What is the benefit of inner / nested classes ?

704

Does substring create a new object?

720

What is an example of a boolean?

771

How do generics work?

697

Can I overload to string method

1139

Where is java located?

709

What is methods and methodology?

752

Which collection is ordered in java?

715

How does arrays sort work in java?

785

Can a class be defined inside an interface?

737

What is the use of parseint in java?

741

What is the difference between hashmap and hashtable? What is an interface?

753

What does yield method of the thread class do?

749

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