Workshop
Quiz
| 1: | We did not want our Command::execute() method to be overridden by code in child classes. How did we enforce this? |
| 2: | Briefly, how did we ensure that there was only one DataStore object in our system at any one time? |
| 3: | We said that the practice of a method calling and using abstract methods defined in the same class was an example of a design pattern. What was its name? |
| 4: | Which keyword did we use to check that an object we had instantiated belonged to the Command family? |
| 5: | How did we ensure that our Command class status flags were unchangeable and available via the class rather than particular object instances? |
Answers
| A1: | You can prevent a child class from overriding a method by declaring it final. |
| A2: | We made the |
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