Abstract Method & classes
An abstract class can’t be a final class
If the subclass is not overriding the abstract method ,then it also becomes an abstract class
An abstract method has no body; it simply has a signature definition followed by a semicolon.
Eg: public abstract void move( );
Any class with an abstract method is automatically abstract itself, and must be declared as such.
An abstract class cannot be instantiated.
A class may be declared abstract even if it has no abstract methods. This prevents it from being instantiated.
