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 7433

what is difference between servletconfig and servletcontext?

Amdocs,

3 7886

what is custom tags with example?

Amdocs,

3 7416

what is connection pooling with example?

Amdocs,

3 11228

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

EDS,

2019

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

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

2 13581

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

CMC,

1 5445

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

Cycore, DNS, Technoram,

2 14734

what is overloading and overriding with example?

CMC,

2 16609

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

T3 Softwares,

1 4764

How is Garbage collection done in Java?

T3 Softwares,

3 9609

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 31883

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

iFlex,

4 8142

explain System.out.println()

CTS,

12 20432

what is wrapper class and its uses?

2 7145

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Un-Answered Questions { Core Java }

What is the ==?

947

Can you call one constructor from another if a class has multiple constructors?

1105

What is an empty string in css?

1108

In how many ways we can do exception handling in java?

1050

Give us the name of the list layoutmanagers in java?

963

What is the use of put method?

1006

Is a case study a method or methodology?

955

Is there any way to skip finally block of exception even if some exception occurs in the exception block?

1120

How to sort an unsorted array in java?

1192

Can a class have more than one object?

1055

What are the data types supported by java?

1084

What is the difference between java applets and applications?

1222

What is sortedmap interface?

1059

What is difference between string and stringbuffer?

1206

what are the methods in object?

1209

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