Write a class named fan to model fans. the properties are speed, on, radius, and color. you need to provide the accessor methods for the properties, and the tostring method for returning a string consisting of all the string values of all the properties in this class. suppose the fan has three fixed speeds. use constants 1, 2, and 3 to denote slow, medium, and fast speeds.
the outline of the class is given as follows:
public class fan {
public final int slow = 1;
public final int medium = 2;