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

Core Java Interview Questions

Questions Answers Views Company eMail

What is the is a and has a relation ship in oops concept in java?

BearingPoint, TCS,

9 43189

what is the difference between pagecontext and servletcontext?

JBA Infotech, TCS,

5 22642

EDS (Electronic Data Systems India Pvt Ltd) at Chennai on 16-12-2006.

EDS,

1 9285

Which is not Object in Java?

Honeywell,

10 17068

Iterator in the HashMap is fail-safe means what?

CTS, IBM, Subex,

9 37442

hi am an engineering student and my next plan is for ms in either in us or australia i got my passport but i dont know anything bout visa can u give brief idea 1)How to get prepared for visa and 2)How to apply for top universities and 3)How to pay the fee and so on These all are basic questions plz give me a clear idea

1972

can we write a program with out a class in core java?

Wipro,

11 17550

Why non nested classes in java are not having marked as protected access specifier

Google,

2 11356

for what purpose we use applets ?

Mindlogicx,

3 11865

What do u mean by wrapper Class? What do u mean by Jvm... How do u change JVM for other OS? Or No need to Change ...? its like tricky

Accenture, EDS,

6 18527

what is dynamic method dispatch ?

Fidelity, MUET, SDSF,

27 54233

suppose string s1="rajnish"; string s2="bhaskar"; then what will be happend ?

Fidelity,

9 13044

what is the Arraylist limit (maximum) by default ?

Fidelity, PlanetSoft, Wipro,

13 47875

can you create interface instance ?

Fidelity, TCS,

54 80220

which one the better thread emplemented thread or extended ?

Fidelity,

4 9004

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Un-Answered Questions { Core Java }

How do you find the maximum number from an array without comparing and sorting?

1180

What is application system?

1016

Is string thread safe in java?

1143

What is lazy programming?

1098

What is bom encoding?

1059

What is tcp and udp?

1077

How do you get length in java?

1090

Why java is said to be pass-by-value ?

1095

Explain how hashmap works?

1123

Which collection is sorted in java?

1087

What is the difference between dom and sax parser in java?

1029

Explain the importance of finally block in java?

1026

What is identifier in java?

1183

What are the basic concepts of OOPS in java?

1093

Is java hard to learn?

967

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