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 7240

what is difference between servletconfig and servletcontext?

Amdocs,

3 7656

what is custom tags with example?

Amdocs,

3 7149

what is connection pooling with example?

Amdocs,

3 10892

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

EDS,

1940

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

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

2 13345

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

CMC,

1 5245

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

Cycore, DNS, Technoram,

2 14515

what is overloading and overriding with example?

CMC,

2 16386

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

T3 Softwares,

1 4614

How is Garbage collection done in Java?

T3 Softwares,

3 9355

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 31112

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

iFlex,

4 7853

explain System.out.println()

CTS,

12 19732

what is wrapper class and its uses?

2 6890

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Un-Answered Questions { Core Java }

How many bytes is a string in java?

955

How does hashmap work in java ?

994

What is a stack class in java ?

1063

What is the list interface?

1050

Where is core java used?

979

Explain notify() method of object class ?

1050

What is int argc char * argv?

1086

Explain, java is compatible with all servers but not all browsers?

1021

Explain the protected field modifier?

1038

What is final int?

969

What is difference between iterator and enumeration in java?

957

If try block is successfully executed, Then Is Finally block executed?

1061

What is == and === in javascript?

1013

Is vector ordered in java?

969

Explain features of interfaces in java?

950

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