AP Computer Science 2.1 Inheritance, Abstraction, and Polymorphism

purpose of an abstract classes to provide a hybrid between

a concrete class and an interface it can implement some

methods and choose not painful and others while an interface

can't implement any and a regular class must implement all

also today all right choice b seems like it might

be Our answer statement is actually office and the rules

of abstract and interfaces abstract classes can contain instance variables

while interfaces can't let's check the other choices though to

make sure we've got the right one here All right

choice sees true both abstract classes and interfaces can have

final variables and choice Dee is also true You can

only create instances of concrete classes and finally we see

that he is true Though it is somewhat subjective this

outlines the basic use are abstract classes and interface is

the correct answer is b that's We shouldn't give abstract

art it's a break We can kind of see the 00:01:15.415 --> [endTime] fish in this painting