Answers for "abstract and final class"

difference between abstract class and final

1-Abstract method should be overriden
 -Final method can't be overriden
2-Abstract method can be inherited
 -Final can't be inherited
3-Abstract can be w/o implementation
 -Final must have implemetation
4-Abstract we can't create objects
 -Final we can create objects(string)
5-Abstract can't be instantiated
 -Final can be instantiated

final method and abstract method

Final method: Cannot be overridden (changing implementation) 
Abstract method: is meant to be overridden 
Any method can be final whether static or non-private you can
make the as final. cannot be abstract.
constructor cannot be final you cannot declare without body