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Core Java Interview Questions
Questions Answers Views Company eMail

java program with complete 4 oops concepts implemented example

Infosys, NIIT,

2360

what is platform independence in java?

CSC, HSBC,

5 5262

if num=687; U have to get num=6+8+7;

CMC,

4 3881

there are some duplicate values in ArrayList, how U'll get that array with out duplicate?

CMC,

4 6416

in a console we r giving java if r pressing enter where it'll goes

CSC,

2 3139

Can we extend the String class?

Truworth,

3 21255

we r taking 0 1 in deployment descripter for loading servlets like serv1 N serv2? so 'll it take serv1 or serv2

CSC,

2 5714

what are the different non-access specifiers in java?

5 8849

java Technical questions asked by JPMC

JPMorgan Chase,

4115

what are variables in java

Wipro,

7 5254

What is multithreading ???? How to stop multithrading in java????

Cognizant,

1 3878

Suppose there is an array list [10,5,20,19,15,24].Print them in ascending & descending order in collection framework concept ???

Cognizant,

2 4901

What will happen if we cannot mention "finally" in Java Program ???

PWC,

3 4620

What is default specifier ??? Use of default specifier ???

Cognizant, Syntel,

4 5309

write a program to create an arraylist with string(add,remove) operation.and value should be enter through keyboard.

Axcend,

1261


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Un-Answered Questions { Core Java }

Can we use string in switch case in java?

204


What does nullpointerexception mean?

146


What are invisible components?.

1302


Can I uninstall java?

148


How are variables stored?

131






How many ways can we create singleton class?

137


What does jre stand for?

153


How to sort numbers in java without array?

155


What is double checked locking in singleton?

128


What defines function?

152


Is char * a string?

153


Does java allow overriding static methods ?

176


Explain the importance of join() method in thread class?

221


What is package private scope in java?

147


Why is flag used in java?

153