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Core Java Interview Questions
Questions Answers Views Company eMail

if i have one string class then how can you achive this class functionality of this class?

Fidelity, iFlex,

3 4586

can abstract class have constructor how can you achive this ?

Fidelity,

4 8101

what is difference betwwen hashmap and hashtable ?

Fidelity,

7 7940

we know that every java prog must follows OOPS Principles. Anybody can answer, HOW THE FOLLOWING PROGRAM FOLLOWS OOPS CONCEPTS i.e, Inheritance,Polymarphism,Encapsulation? class a{ public static void main(String args[]){ System.out.println("Hello World"); } }

3 5308

is memory to the abstract class allocated ..or objects not instantiated

Synechron, TCS,

7 16053

where the static methods will live ,on stack ? can you explain brefly

1 1420

how to write a server program and sending the mails to the server using smtp protocol please help me

Lampex,

1139

how to write a program for sending mails between client and server

Lampex,

1142

how to write a program for chat function using core java

Satyam,

1 3643

why abstract class will have a constructor?

4 5213

how to run ecllipse with jettyserver for windows environment using batch file

1095

can we Connect Applet to Data Base ? with Discriptiom. and also What is Diff. from Applet & Servlet?

Systematix,

1 3438

basic difference b/w ALL types of JDBC driver.

Systematix,

1 3587

perpare on factorypattern,linklist wothout using collection, (multitharding ie create producer/customer therad producer create Queue continuesly,consumer consume queue, consumer wait if queue is full,producer wait if queue is empty),diff betn sleep(1000)&wait(1000) these r the main Q ask in huawei(2008)

Huawei,

1 4075

what is meaning of JIT?

4 7512


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Un-Answered Questions { Core Java }

In the below example, how many string objects are created?

147


List any five features of java?

142


What happens if a constructor is declared private?

104


What are register variables what are the advantages?

98


What is the difference between method and means?

112






What do the thread?class methods run() and start() do?

135


Can an interface extend another interface?

144


Can arraylist hold different types java?

98


What is an accessor?

230


What language is java written?

113


What is better- service oriented or batch oriented solutions?

233


What is the constructor?

136


How many ways can we create singleton class?

115


What is a values collection view ?

166


Do we need to manually write Copy Constructor?

153