help needed on this java program

Problem: Write a class named Fan to model fans. The properties are speed, on, radius, and oolor. 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