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Challenge exercise In the processCommand method in Game, there is a switch statement...

Challenge exercise In the processCommand method in Game, there is a switch statement (or a sequence of if statements) to dispatch commands when a command word is recognized. This is not a very nice design, because every time we add a command, we have to add a case here. Can you improve this design? Design the classes so that handling of commands is more modular and new commands can be added more easily. Implement it. Test it.

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