Circle.java

public class Circle {
	private double radius;
	private String color;

	// default value for radius and color
	public Circle () {
		radius = 1.0;
		color = "red";
	}

	// radius as parameter and default color
	public Circle (double r) {
	    radius = r;
	    color = "red";
	}

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

	public double getRadius() {
		return radius;
	}

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

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

	public String getDescription() {
      	   String radiusToString = String.valueOf(radius);
           return "Radius:" + radiusToString + "Color:" + color;
        }

	public String getColor() {
	    return "Color:" + color;
	}

	    public static void main(String[] args) {
		Circle circle = new Circle();
		System.out.println(circle.getArea());
		System.out.println(circle.getCircumference());
		System.out.println(circle.getDescription());
		System.out.println(circle.getColor());


		Circle circle2 = new Circle(2);
       		System.out.println(circle2.getArea());
        	System.out.println(circle2.getCircumference());
        	System.out.println(circle2.getDescription());
		System.out.println(circle2.getColor());


		Circle circle3 = new Circle(3, "blue");
		System.out.println(circle3.getArea());
		System.out.println(circle3.getCircumference());
		System.out.println(circle3.getDescription());
		System.out.println(circle3.getColor());



    }
}