. (The Fan class) Design a class named Fan to represent a fan. The class contains: The Fan class Three constants named SLOW, MEDIUM, and FAST with the values 1, 2, and 3 to denote the fan speed. A private int data field named speed that specifies the speed of the fan (the default is SLOW). A private boolean data field named on that specifies whether the fan is on (the default is false). A private double data field named radius that specifies the radius of the fan (the default is 5). A string data field named color that specifies the color of the fan (the default is blue). Accessor and mutator methods for all four data fields. A no-arg Constructor that creates a default Fan. A method named toString() that returns a string description for the fan.

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