Core Java Interview Questions
Questions Answers Views Company eMail

which method is used to know the status of the Thread?

Honeywell,

9 13028

is this possible to create an array of 0 length? if so how? if not so why? coz we have an array in main() likw this "static void main(String [] s) then what it signifies?

Hexaware, TCS,

3 17042

Is it possible to write static method in abstract class? justyfy your answer?

Hexaware,

5 13730

what is the difference between HashMap And HashTable?

Hexaware,

5 11187

what is the difference between abstract class and Interface?where we can use it in realtime projects?

Agile Software, Cognizant, IBM, Innodata, Logica CMG, Mitosis, Nagarro, Value Chain,

23 64970

How many bits are used to represent unicodde,ASCII,UTF-16 and UTF-8 characters?

2 5226

which class to use when concatenating strings in a loop.

IBM,

3 7633

what are depricated methods ?

Satyam,

5 9595

What is multiple inheritance & can we implement it in java?

Satyam,

6 13048

what is the difference between cd & dvd ?

Lovely Professional University, Satyam, Sibylsys,

30 48978

why java does not support multiple inheritance

Diamond, Euclid, Evergent, KLKJ, Mind Tree, NIIT, SSI Small Scale Industries, Wipro,

41 93506

why to use transient variables when static variables can be used for Serialization

4 19206

what is the difference between HashMap and Hashtable

Value Labs, Virtusa,

17 58164

what is the difference between ArrayList and Vector

KPIT, Sasken, Satyam, Span Infotech, Wipro,

19 43845

what is the difference between @include page and @include file

2 7924


Post New Core Java Questions

Un-Answered Questions { Core Java }

What are voids?

545


Can you override a final method?

584


Can you call a method in a method?

537


What are the limitations of procedural programming approach?

537


Convert Binary tree to linked list.

596






What is the purpose of checked and unchecked exceptions in JAVA?

571


What is ascii format?

558


Write code of any action class?

552


How can we use primitive data types as objects?

563


What java is used for?

666


What is the relationship difference the canvas class and the graphics class?

568


What is a layout manager and what are different types of layout managers available in java awt?

731


What is the biggest integer?

562


If an object is garbage collected, can it become reachable again?

548


What is math in java?

574