The CircleCalculator class problem

Fill in the bodies of the methods in the following class. Then write a class TestCircleCalculator with a static main method that creates

a CircleCalculator and exercises each of the methods.

Extensions:

Add setDiameter, getDiameter, and getRadius methods. Do not add a myDiameter instance variable.

Complete the class with setArea and setCircumference methods.

/**

* Calculates values for a circle, given the radius. The radius can be changed

* through the setRadius() method.

*

* @author Tim Corica

* @version July 2004

*/

public class CircleCalculator

{

// Instance variables.

private double myRadius = 20;

private final double PI = 3.14159;

/**

* Sets the value of the radius to be used in subsequent calculations.

*/

public void setRadius(double radius)

{

}

/**

* Returns the area of a circle using the current radius value.

*/

public double getArea()

{

}

/**

* Returns the circumference of a circle using the current radius value.

*/

public double getCircumference()

{

}

}