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 7333

what is difference between servletconfig and servletcontext?

Amdocs,

3 7755

what is custom tags with example?

Amdocs,

3 7270

what is connection pooling with example?

Amdocs,

3 11052

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

EDS,

1977

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

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

2 13459

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

CMC,

1 5338

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

Cycore, DNS, Technoram,

2 14619

what is overloading and overriding with example?

CMC,

2 16504

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

T3 Softwares,

1 4685

How is Garbage collection done in Java?

T3 Softwares,

3 9475

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 31484

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

iFlex,

4 7994

explain System.out.println()

CTS,

12 20041

what is wrapper class and its uses?

2 7018

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Un-Answered Questions { Core Java }

Can a class have an interface?

992

what is singleton class in java?

1057

Describe the process as to how substring() methodology mechanisms in java.

1129

What is the purpose of using the java bean?

1053

What do you mean by flow of struts?

1312

What are some examples of variable costs?

956

What do the thread?class methods run() and start() do?

1037

What are the types of web technologies?

1044

Why vector is used in java?

1027

What is callablestatement? How you can call stored procedure to pass in parameter?

1025

What is a variable in java?

1134

Can we define package statement after import statement in java?

1037

How can an object be unreferenced?

1024

What is data type modifier?

945

What is user defined exception in Java?

1082

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