Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

java program with complete 4 oops concepts implemented example

Infosys, NIIT,

3107

what is platform independence in java?

CSC, HSBC,

5 8518

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

CMC,

4 6084

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

CMC,

4 9148

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

CSC,

2 4845

Can we extend the String class?

Truworth,

3 25311

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

CSC,

2 7427

what are the different non-access specifiers in java?

5 11940

java Technical questions asked by JPMC

JPMorgan Chase,

5011

what are variables in java

Wipro,

7 9162

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

Cognizant,

1 5309

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

Cognizant,

2 6962

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

PWC,

3 7082

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

Cognizant, Syntel,

4 8376

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

Axcend,

2131

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Un-Answered Questions { Core Java }

Under what conditions is an object’s finalize() method invoked by the garbage collector?

994

What is the use of toarray () in java?

1027

What is the difference between the direct buffer and non-direct buffer in java?

989

What is the difference between stream and buffer?

936

What does system.gc() and runtime.gc() methods do?

1003

Is a string literal?

1026

What are meta-annotations?

945

What comes to mind when someone mentions a shallow copy in java?

1075

what is inner class in java?

1090

When throw keyword is used?

1019

What is bitwise complement?

947

Differentiate jar and war files?

994

Is special character in java?

1064

What are the data types supported by java?

991

What are constants?

1008

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