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 42596

what is the difference between pagecontext and servletcontext?

JBA Infotech, TCS,

5 22254

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

EDS,

1 9165

Which is not Object in Java?

Honeywell,

10 16464

Iterator in the HashMap is fail-safe means what?

CTS, IBM, Subex,

9 36916

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

1870

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

Wipro,

11 16902

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

Google,

2 11143

for what purpose we use applets ?

Mindlogicx,

3 11631

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 18111

what is dynamic method dispatch ?

Fidelity, MUET, SDSF,

27 52739

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

Fidelity,

9 12449

what is the Arraylist limit (maximum) by default ?

Fidelity, PlanetSoft, Wipro,

13 46942

can you create interface instance ?

Fidelity, TCS,

54 77462

which one the better thread emplemented thread or extended ?

Fidelity,

4 8689

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Un-Answered Questions { Core Java }

do I need to use synchronized on setvalue(int)? : Java thread

973

Is double bigger than float?

924

What is a stringbuilder?

865

Difference between vector and arraylist.

1061

What is super in java?

955

Is string thread safe in java?

1046

What are the features in java?

1038

How many bits are used to represent unicode, ascii, utf-16, and utf-8 characters?

1058

What is the difference between preparedstatement and statement in java?

1078

Tell me the Importent classes in net package?

1958

How hashmap works in java?

1020

When does an object becomes eligible for garbage collection in java?

1021

List some features of the abstract class.

1017

What is main in java?

1089

What are methods?

982

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