Kernel Implementations

Question 1

Abstraction

Answer 1

A mathematical model used to explain and predict behavior.

Question 2

Tower of abstractions

Answer 2

A hierarchical structure where higher-level abstractions/mathematical models are built upon lower-level abstractions/models to explain and predict a certain behavior.

Question 3

What’s a better alternative approach to a “tower of abstractions”?

Answer 3

Implementation of representation - the idea of interpretation of a lower-level configuration (a.k.a. a representation) to get a higher-level value.

Question 4

What is the convention for kernel classes to have their names ending in “L”?

Answer 4

If the kernel class directly represents its new (respective component) type using a component from the Java libraries that exhibits same/very similar behavior to that of the kernel class’s component type, that kernel class should have its name ending in “L”.

Question 5

How do we implement an object of a certain kernel class type?

Answer 5

Declaration of a private instance variable(s) in the kernel class’s implementation code. This variable’s value is of the lower-level configuration (i.e. representation) type and it represents one object of the kernel class type.