>>Student:A class is something you take 3 times a week in a semester, like Java Programming

Class. It is boring, but we have to take it.

>>Teacher:Then what is an Object? Can we NEW an object from a class, like we NEW a dog

named Lucky in a Dog class?

>>Student:An Object is something you can buy. If you want to create an object, you have

to be God to do so.

>>Teacher:When you write Java Programs you are the God in this program, you create Lucky

from a class called Dog.

>>Student:Are you sure? What if I want to create $1000 dollar bill from a class called

Money?

>>Teacher:Yes you can, but you can only spend the money you created in this Java program.

>>Student:That is pretty sad if my Lucky can only live in this program, and my $1000 dollar

bill can only be spent here. No exception allowed?

>>Teacher:Exceptions? Well, if you Try, you may Catch exceptions, and Finally you may

become a successful programmers with lots of real world money and a pet named Lucky!

>>Student:Really? But I think it may be easier to Inherit the money from my Dad, and Extend

it into mine.

>>Teacher:But what if the Cnstructor think you owe them too much money and force you

to do Garbage Collection for them?

>>Student:No way, I will use my Private Method and my Superclass will take care all these

mess. If they don't, I just Crash and Exit with zero value!