Look Who it Was Random video

Top Core Java Interview Question and Answer 21

356 views · Published 16 October 2012 · 1:14 · Indexed 12 October 2026

Channel: Interview DOT · 2012 · Science & Technology

Watch on YouTube

Click here - https://www.youtube.com/channel/UCd0U_xlQxdZynq09knDszXA?sub_confirmation=1 to get notifications. JOB VACANCIES IN TOP IT / NOT-IT COMPANIES

UPLOAD YOUR RESUME IN 1 MINUTE ! ! !
http://www.interviewdot.com/upload-resume/uploadresume.htm

http://www.interviewdot.com http://www.interviewdot.com http://www.interviewdot.com

Welcome to www.InterviewDot.com     How to prepare for Java interview Questions :   

Top Core Java interview questions and answers

To what value is a variable of the String type automatically initialized?

The default value of an String type is null.

What is the difference between a field variable and a local variable?

A field variable is a variable that is declared as a member of a class. A local variable is a variable that is declared local to a method.

How are this() and super() used with constructors?

this() is used to invoke a constructor of the same class. super() is used to invoke a superclass constructor.

What does it mean that a class or member is final?

A final class cannot be inherited. A final method cannot be overridden in a subclass. A final field cannot be changed after it's initialized, and it must include an initializer statement where it's declared.

What does it mean that a method or class is abstract?

An abstract class cannot be instantiated. Abstract methods may only be included in abstract classes. However, an abstract class is not required to have any abstract methods, though most of them do. Each subclass of an abstract class must override the abstract methods of its superclasses or it also should be declared abstract.

For more Java Interview questions and answers  - logon to www.InterviewDot.com - India's Top Interview Guide.

http://www.interviewdot.com http://www.interviewdot.com http://www.interviewdot.com

More from this channel