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 server side caching?

AIG,

2174

what is difference between validation.xml & validation rules.xml?

BirlaSoft,

8 27265

write a simple program inheritance?

Polaris,

2 7595

write a progam hashmap & hashtable?

IBM,

2 8586

what is webservices

Consultancy, Mind Tree,

5 10063

How to provide security in java

Infosys, TCS, Tech Mahindra,

2280

java can provide security ,how can provide?

Aspire, BNP Paribas, Genpact, IBM,

8 29743

what is servlet filter?

2 8706

what is request dispatcher and how does it work?

CTS,

2 11806

what is servlet enginee?

Covansys,

2161

how can i cal servlet from jsp page?how can i pass variablesfrom the jsp that servlet can access?

Verizon,

1 7829

what is sendredirect?

TCS,

7 10215

what is difference between requestprocessor and request dispatcher?

Tech Mahindra,

2 19621

what is difference between Action messages and Action errors?

Bio Imagene, TCS,

3 15031

what is the purpose of the final in the try-catch-final

7 9662

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Un-Answered Questions { Core Java }

State the difference between strings and arrays.

1248

Can a class have more than one object?

996

What is the difference between a window and a frame in java programming?

1139

What is hasnext in java?

1022

Compare overloading and overriding?

1005

Why 1 is not a prime number?

1027

What is a finally block? Is there a case when finally will not execute?

1085

What will happen to the exception object after exception handling?

996

Is null a string in java?

1081

Tell me about different OOPS concepts.

1006

What is jagged array in java?

1091

What is the difference between jdk, jre, and jvm?

1120

Can we have this () and super () together?

1045

Why can we not override static method?

1109

How can I debug the Java security exceptions and AccessControlExceptions?

1155

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