Is Google working where you are connected to the internet?
Give it a try
Type: Posts; User: Norm
Is Google working where you are connected to the internet?
Give it a try
This is OOP theory. You'll get better answers for these questions from your textbooks or tutorials.
What do your lessons and text book say?
Can you write a simple program to show the problem you are having?
Take a look at these tutorials:
The Java™ Tutorials
The Really Big Index
Trail: Learning the Java Language: Table of Contents (The Java™ Tutorials)