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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 15469

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 18384

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

Hexaware,

5 15568

what is the difference between HashMap And HashTable?

Hexaware,

5 13349

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 71279

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

2 6152

which class to use when concatenating strings in a loop.

IBM,

3 8922

what are depricated methods ?

Satyam,

5 11314

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

Satyam,

6 15215

what is the difference between cd & dvd ?

Lovely Professional University, Satyam, Sibylsys,

30 56846

why java does not support multiple inheritance

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

41 104815

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

4 20695

what is the difference between HashMap and Hashtable

Value Labs, Virtusa,

17 63292

what is the difference between ArrayList and Vector

KPIT, Sasken, Satyam, Span Infotech, Wipro,

19 49592

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

2 8743


Post New Core Java Questions

Un-Answered Questions { Core Java }

What is the main method java?

1030


What is finally and finalize in java?

1093


What is the effect of keeping a constructor private?

951


What is tree in java?

919


When is an object subject to garbage collection?

1066


What is java reflection?

983


Does list maintain insertion order java?

915


Who is the owner of java?

1003


Does java allow overriding static methods ?

1112


What are the procedures?

1057


How do you sort words in java?

927


What is variable and rules of variable?

1020


What is canonical name in java?

1147


Define the term string pool?

1006


Can we create more than one object singleton class?

1038