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;

public final int FAST = 3;

private int speed = SLOW;

private boolean on = false;

private double radius = 5;

private String color = "white";

public Fan ( ) { }

public Fan (int speed, boolean on, double radius, String color) { }

public int getSpeed ( ) { }

public void setSpeed (int speed) { }

public boolean isOn ( ) { }

public void setOn ( ) { }

public double getRadius ( ) { }

public void setRadius (double radius ) { }

public String getColor ( ) { }

public void setColor ( String color ) { }

public String toString ( ) { }

}

Write a client program (test application) to test the Fan class. In the client program, create a Fan object. Assign maximum speed, radius 10, color yellow, and turn it on. Display the object by invoking its toString method.

You also need to test this program.