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 6689

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 2643

what is difference between Interface and abstract class

GCPL,

2 4332

what are the design patterns in struts?

1 3223

Infinite loop using while ?

4 4463

Difference between Primary key and unique key?

4 5165

What is the difference between method and constructor ?

3 4531

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

TCS,

3 6185

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

BitWise, HDFC, TCS,

3 15161

what are the rules to use try catch finally?

Satyam, UJ,

1 4744

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

3 4473

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

1 2900

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

IBM, Infosys,

5 17661

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 7857

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 2960

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Un-Answered Questions { Core Java }

What is a null point?

559

What does method mean?

518

Can inner class have constructor?

552

How can we find the actual size of an object on the heap?

806

Can we use catch statement for checked exceptions?

520

Does java support function overloading, pointers, structures, unions or linked lists?

608

What are inbuilt functions?

573

How does arrays sort work in java?

604

What are the data types supported by java?

550

What is the use of put method?

519

What is linked hashset and its features?

552

What is bean? Where it can be used?

609

Do we need to manually write Copy Constructor?

606

What is args length in java?

667

What is set string?

597

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