Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

Ducking is automatic in checked exception?True or false

2 7473

FOR EXAMPLE WE R HAVING TWO LIST ELEMENTS ..BOTH LISTS CONTAINS ID,NAME,PLACE ..I NEED TO COMPARE BOTH IDS IN TWO LISTS,IF ID'S R SAME MEANS WE HAVE ADD THE DETAILS(LIKE NAME,PLACE) TO MAP...HOW IS POSSIBLE ?CAN ANY ONE SUGGEST?

1 3390

what is difference between Interface and abstract class

GCPL,

2 5272

what are the design patterns in struts?

1 3864

Infinite loop using while ?

4 5603

Difference between Primary key and unique key?

4 6418

What is the difference between method and constructor ?

3 5657

If circular link of two objects, then will it be garbage collected ?

TCS,

3 7304

Why we need Finally with try? pls expain with ur example..

BitWise, HDFC, TCS,

3 16480

what are the rules to use try catch finally?

Satyam, UJ,

1 5389

when there is a need of jvm then how we can say that java is a platform independent language?

3 5557

what should do when using multiple catch() block & what should never do for the same?

1 3738

any other way to print the text without using System.out.println() in java?

IBM, Infosys,

5 19310

what is the difference between applet and swing and gui application in java . What we do with the collections set and list interface

CTS, Phoenix Technologies,

2 8751

Why should we create an object? what is a need of it? Apart from access members of a class i want what is a need of object what does it contain?? In normal class to access any member of thaht class we create object where as for static class we access its members using class name. what is a difference between them... thanks in advance.

1 3542

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Un-Answered Questions { Core Java }

What is t in parametric equations?

946

Is empty string in java?

1097

Difference between ‘>>’ and ‘>>>’ operators in java?

1080

What classes of exceptions may be caught by a catch clause in java programming?

1115

Is null a string?

948

Can we store variables in local blocks?

1308

what is the purpose of the runtime class?

1016

What is tochararray in java?

879

What language is java written?

969

Which list does not allow duplicates in java?

876

What is the use of static methods?

998

What is difference between word and integer?

1009

What is the difference between Array and Hash Table?

983

What are the high-level thread states in java programming?

1002

How do you do descending order in java?

911

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