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 7692

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 3557

what is difference between Interface and abstract class

GCPL,

2 5467

what are the design patterns in struts?

1 4016

Infinite loop using while ?

4 5969

Difference between Primary key and unique key?

4 6816

What is the difference between method and constructor ?

3 5921

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

TCS,

3 7587

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

BitWise, HDFC, TCS,

3 16834

what are the rules to use try catch finally?

Satyam, UJ,

1 5604

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

3 5851

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

1 3935

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

IBM, Infosys,

5 19745

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 8984

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 3693

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Un-Answered Questions { Core Java }

Why vector class is used?

1034

Explain public static void main(string args[]) in java.

1049

What are white spaces in java?

1126

What happens when I use / and % with a negative numerator?

1079

In java, how many ways you can take input from the console?

1042

Difference between string, stringbuffer and stringbuilder?

1073

Can we override final method?

1068

What are the differences between getting and load method?

1294

What is e java?

1168

Is string serializable in java?

1069

What does split function do in java?

1078

Why main method is static in java?

1231

What method is used to specify a container's layout in java programming?

1207

How will you communicate between two applets?

1214

What is the importance of static variable?

1169

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