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 42904

what is the difference between pagecontext and servletcontext?

JBA Infotech, TCS,

5 22442

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

EDS,

1 9213

Which is not Object in Java?

Honeywell,

10 16776

Iterator in the HashMap is fail-safe means what?

CTS, IBM, Subex,

9 37221

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

1930

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

Wipro,

11 17224

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

Google,

2 11254

for what purpose we use applets ?

Mindlogicx,

3 11750

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 18318

what is dynamic method dispatch ?

Fidelity, MUET, SDSF,

27 53520

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

Fidelity,

9 12741

what is the Arraylist limit (maximum) by default ?

Fidelity, PlanetSoft, Wipro,

13 47427

can you create interface instance ?

Fidelity, TCS,

54 78861

which one the better thread emplemented thread or extended ?

Fidelity,

4 8837

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Un-Answered Questions { Core Java }

What is the final blank variable?

1146

How do you sort in descending order in java using collections sort?

906

Why local variables are stored in stack?

986

How do you format in java?

1018

Are arrays classes in java?

1042

What is function and method in java?

958

How do singleton patterns work?

979

What is lifetime variable?

968

What is natural ordering in java?

971

Is boolean a wrapper class in java?

1063

When will you define a method as static?

1102

What does a boolean method return?

1247

What is regex in java?

955

What is the purpose of the enableevents() method in java programming?

1192

What is null in java?

978

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