Chapter 6, Problem 1AW

l. Consider the following class declaration:

 public class Circle

 {

   private double radius;

   public Circle(double r)

   {

     radius = r;

   {

   public double getArea()

   {

     return Math.PI * radius * radius;

   }

   public double getRadius()

   {

     return radius;

   }

 }

1. a. Write a toString method for this class. The method should return a string containing the radius and area of the circle.
2. b. Write an equals method for this class. The method should accept a Circle object as an argument. It should return true if the argument object contains the same data as the calling object, or false otherwise.
3. c. Write a greaterThan method for this class. The method should accept a Circle object as an argument. It should return true if the argument object has an area that is greater than the area of the calling object, or false otherwise.