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,

3160

what is platform independence in java?

CSC, HSBC,

5 8714

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

CMC,

4 6211

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

CMC,

4 9326

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

CSC,

2 4945

Can we extend the String class?

Truworth,

3 25420

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

CSC,

2 7512

what are the different non-access specifiers in java?

5 12095

java Technical questions asked by JPMC

JPMorgan Chase,

5087

what are variables in java

Wipro,

7 9364

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

Cognizant,

1 5389

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

Cognizant,

2 7064

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

PWC,

3 7228

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

Cognizant, Syntel,

4 8552

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

Axcend,

2176

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Un-Answered Questions { Core Java }

How to make a write-only class in java?

1065

Define a java class.

1453

What are the ways in which a thread can enter the waiting state?

944

What is the abstract class?

1030

Can we have multiple catch block for a try block?

1019

How do you do exponents in java?

1063

What are the problems faced by java programmers who don't use layout managers?

980

Explain implementation and how is it different from conversion?

1086

What are streams in java 8?

1009

How hashset works internally in java?

1099

What is a local, member and a class variable?

1040

Can we have multiple classes in a single file?

983

What are the advantages of packages in java?

1617

Can you explain the private protected field modifier?

1030

How do you clear an arraylist in java?

991

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