/**
 *A circle has an area and perimeter.
 */
public class Circle
{
	private double radius;
	
	/**
	 *Creates a circle with a given radius.
	 *@param radius Specifies the radius.
	 */
	public Circle(double newRadius)
	{
		radius=newRadius;
	}
	
	/**
	 *Calculates and returns the area of the circle.
	 *@return Returns the area.
	 */
	public double getArea()
	{
		return (22/7.0)*radius*radius;
	}
	
	/**
	 *Calculates and returns the perimeter of the circle.
	 *@return Returns the perimeter.
	 */
	public double getPerimeter()
	{
		return 2*(22/7.0)*radius;
	}
	
	/**
	 *Returns all the stored information on the circle.
	 *@return Returns all information.
	 */
	public String toString()
	{
		return "Radius: "+radius+"\n"+
			"Area: "+getArea()+"\n"+
			"Perimeter: "+getPerimeter();
	}
}

/** OUTPUT FROM DEMO
Area= 78.57142857142857
Perimeter= 31.428571428571427
Radius: 5.0
Area: 78.57142857142857
Perimeter: 31.428571428571427
Press any key to continue...
*/