abstract class GeometricObject 
{
	public String color;

	protected GeometricObject() 
	{
		color = new String("blue");
	}  
	public GeometricObject(String color) 
	{
		this.color = color;
	}

	public abstract double area();
}

// Sphere, Rectangle, Cube, and Triangle
class Sphere extends Circle 
{
	public Sphere() 
	{
		super();
	}

	public Sphere(String color, double radius) 
	{
		super(color, radius);
	}

	public double area() 
	{
		return 4 * Math.PI * radius * radius;
	}

	public double volume() 
	{
		return 4 /3 * Math.PI * radius * radius * radius;
	}

	public double circumference() 
	{
		System.out.println("It doesn't make sense to find the circumference of a sphere!");
		return -1;
	}

}


class Rectangle extends GeometricObject 
{
	public double side1;
	public double side2;

	public Rectangle() 
	{
		super();
		side1 = 1;
		side2 = 1;
	}
	public Rectangle(String color, double side1, double side2) 
	{
		super(color);
		this.side1 = side1;
		this.side2 = side2;
	}

	public double area() 
	{
		return side1 * side2;
	}

	public double circumference() 
	{
		return 2 * (side1 + side2);
	}
}

class Cube extends Rectangle 
{
	public Cube() 
	{
		super();
	}
	public Cube(String color, double side) 
	{
		super(color, side, side);
	}

	public double area() 
	{
		return 6 * super.area();
	}

	public double volume() 
	{
		return side1 * super.area();
	}

	public double circumference() 
	{
		System.out.println("It doesn't make sense to find the circumference of a cube!");
		return -1;
	}
}

class Triangle extends GeometricObject 
{
	public double side1;
	public double side2;
	public double side3;

	public Triangle() 
	{
		super();
		side1 = 1;
		side2 = 1;
		side3 = 1;
	}
	public Triangle(String color, double side1, double side2, double side3) 
	{
		super(color);
		this.side1 = side1;
		this.side2 = side2;
		this.side3 = side3;
	}

	// Heron's formula
	public double area() 
	{
		double s = (side1 + side2 + side3) / 2;
		return Math.sqrt(s*(s-side1)*(s-side2)*(s-side3));
	}

	public double circumference() 
	{
		return side1 + side2 + side3;
	}
}


class Circle extends GeometricObject 
{
	public double radius;

	public Circle() 
	{
		super();
		radius = 2;
	}
	public Circle(String color, double radius) 
	{
		super(color);
		this.radius = radius;
	}

	public double area() 
	{
		return Math.PI * radius * radius;
	}

	public double circumference() 
	{
		return 2 * Math.PI * radius;
	}
}

class Cylinder extends Circle 
{
	public double height;

	public Cylinder() 
	{
		super();
		height = 5;
	}
	public Cylinder(String color, double radius, double height) 
	{
		super(color, radius);
		this.height = height;
	}

	public double area() 
	{
		return 2 * super.area() + circumference() * height;
	}

	public double circumference() 
	{
		System.out.println("It doesn't make sense to find the circumference of a cylinder!");
		return -1;
	}

	public double volume() 
	{
		return super.area() * height;
	}
}

class Driver 
{
	public static void main(String args[]) 
	{
		System.out.println("Please enter 1 to create a Sphere, 2 for Rectangle, 3 for Cube, 4 for Triangle, 5 for Circle, 6 for Cylinder: ");
		int choice = UserInput.readInt();
		switch(choice)
		{
			case 1: 
			{
				System.out.println("Enter sphere radius: ");
				double r = UserInput.readDouble();
				System.out.println("Enter sphere color: ");
				String c = UserInput.readString();
				method(new Sphere(c,r));
				break;	
			}
			case 2: 
			{
				System.out.println("Enter rectangle side 1: ");
				double s1 = UserInput.readDouble();
				System.out.println("Enter rectangle side 2: ");
				double s2 = UserInput.readDouble();
				System.out.println("Enter rectangle color: ");
				String c = UserInput.readString();
				method(new Rectangle(c,s1,s2));					
				break;
			}
			case 3: 
				{
				System.out.println("Enter cube side: ");
				double s = UserInput.readDouble();
				System.out.println("Enter cube color: ");
				String c = UserInput.readString();
				method(new Cube(c,s));					
				break;
			}
			case 4: 
				{
				System.out.println("Enter triangle side 1: ");
				double s1 = UserInput.readDouble();
				System.out.println("Enter triangle side 2: ");
				double s2 = UserInput.readDouble();
				System.out.println("Enter triangle side 3: ");
				double s3 = UserInput.readDouble();
				System.out.println("Enter triangle color: ");
				String c = UserInput.readString();
				method(new Triangle(c,s1,s2,s3));					
				break;
			}
			case 5: 
				{
				System.out.println("Enter circle radius: ");
				double r = UserInput.readDouble();
				System.out.println("Enter circle color: ");
				String c = UserInput.readString();
				method(new Circle(c,4));					
				break;
			}
			case 6: 
				{
				System.out.println("Enter cylinder radius: ");
				double r = UserInput.readDouble();
				System.out.println("Enter cylinder height: ");
				double h = UserInput.readDouble();
				System.out.println("Enter cylinder color: ");
				String c = UserInput.readString();
				method(new Cylinder(c,r,h));					
				break;
			}
		}
	}


	// think about what would happen if we changed the places of if statements for Cylinder, Circle and Sphere! 
	// and similarly for Cube and Rectangle
	public static void method(GeometricObject geo) 
	{
		System.out.println("Area is: " + geo.area());

		if (geo instanceof Cylinder) 
			 {
				Cylinder c = (Cylinder) geo;

				System.out.println("C Area is:  " + c.area());
				System.out.println("C area is:  " + c.area());
			 }
		
		else if (geo instanceof Sphere) 
		{
			Sphere s = (Sphere) geo;

			System.out.println("S Area is:  " + s.area());
			System.out.println("S volume is:  " + s.volume());
		}

		else if (geo instanceof Circle) 
		{
			Circle c = (Circle) geo;

			System.out.println("C Area is:  " + c.area());
			System.out.println("C circumference is:  " + c.circumference());
		}

		else if (geo instanceof Cube) 
		{
			Cube c = (Cube) geo;

			System.out.println("C Area is:  " + c.area());
			System.out.println("C volume is:  " + c.volume());
		}

		else if (geo instanceof Rectangle) 
		{
			Rectangle r = (Rectangle) geo;

			System.out.println("R Area is:  " + r.area());
			System.out.println("R circumference is:  " + r.circumference());
		}

		else if (geo instanceof Triangle) 
		{
			Triangle t = (Triangle) geo;

			System.out.println("T Area is:  " + t.area());
			System.out.println("T circumference is:  " + t.circumference());
		}
	}
}