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Core Java Interview Questions
Questions Answers Views Company eMail

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

Honeywell,

9 12008

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 16403

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

Hexaware,

5 12703

what is the difference between HashMap And HashTable?

Hexaware,

5 10342

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 62771

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

 2 4843

which class to use when concatenating strings in a loop.

IBM,

3 7151

what are depricated methods ?

Satyam,

5 8866

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

Satyam,

6 12292

what is the difference between cd & dvd ?

Lovely Professional University, Satyam, Sibylsys,

30 45895

why java does not support multiple inheritance

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

41 89367

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

 4 18619

what is the difference between HashMap and Hashtable

Value Labs, Virtusa,

17 56175

what is the difference between ArrayList and Vector

KPIT, Sasken, Satyam, Span Infotech, Wipro,

19 41846

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

 2 7611

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Un-Answered Questions { Core Java }

What is contractor means and methods?

388

Define locale.

432

Can a class have a static inner class?

454

Compare overloading and overriding?

393

What are different data types?

409




Which java version is latest?

381

Is there any tag in htm to upload and download files?

467

What is callable java?

401

What are sets in java?

341

What are basic data types?

387

What is the range of a character variable?

408

What is the point of polymorphism java?

391

Why parsing is done?

352

what is comparable and comparator interface?

415

How do you use nextline in java?

353

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