Encapsulated State Machine

Build a class TrafficLight that hides its current color in a private string starting at "Red". Next() advances the color through the cycle Red -> Green -> Yellow -> Red -> ... A read-only Current property returns the color. Do not write a Main method.

Starting at Red, after one Next() the program prints the output shown in Expected Output.

Expected Output:

Green↵

= newline. The output ends with a newline — print one after the last line.

Hints4 available

Topics:

Encapsulation

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