Apex Design Patterns

An abstract class

An abstract class is something between inheritance and an interface. In inheritance, a child class extends a parent class, where both the classes have full implementations. In an interface, a parent class does not have any implementation and depends on child classes completely. There are scenarios where a parent class knows the common implementations needed by all child classes but the remaining implementation differs for all.

In the same game that we discussed earlier, there are multiple ways to gain points. If Mario gets any coin, then the overall score will be added (known), but there are different kinds of coins (unknown). Coins may be in blue, yellow, or different colors. Each color will add different scores.

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