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 ennumaration?

Amdocs,

2 7330

what is difference between servletconfig and servletcontext?

Amdocs,

3 7750

what is custom tags with example?

Amdocs,

3 7268

what is connection pooling with example?

Amdocs,

3 11051

what is the use of bean managed and container managed with example?

EDS,

1976

what is difference between type 4 driver and type 1 driver?

CMC, CTS, IBM, JK Technosoft, Napier Healthcare,

2 13457

what is difference between prepare stetement and callable starement with example?

CMC,

1 5336

what is the use of abstract class and interface with example?

Cycore, DNS, Technoram,

2 14618

what is overloading and overriding with example?

CMC,

2 16501

C and C++ has constructors and distructors, why does Java does not have distructors?

T3 Softwares,

1 4684

How is Garbage collection done in Java?

T3 Softwares,

3 9472

Difference between overloading and Overriding. (also asked in PA Consultancy Group,iflex,Value chain,IBM,CTS,Accenture, Tarang>

Accenture, CTS, Extensio, IBM, iFlex, PA Consulting, Symphony, Tarang,

12 31474

where is .equals() method and how is it different from == operation Is hashing related to these?

iFlex,

4 7991

explain System.out.println()

CTS,

12 20033

what is wrapper class and its uses?

2 7015

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Un-Answered Questions { Core Java }

Which collection is sorted in java?

1034

What is array pointers ?

1032

Why is the main method static?

1159

What is a short in java?

1045

Can we override singleton class?

984

How do I get a substring?

978

What is factor r?

963

What is difference between static and abstract class?

1004

What is the flag in java?

1062

what is the difference between a threads start() and run() methods? : Java thread

1012

How do you override a method in java?

1005

How is the marker interface used in Java?

1100

What are the two ways to create a thread?

1008

What is reverse function?

1132

Are generics important java?

976

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