circle.java

this gives details of the network programming

// Circle class
//
// a Circle has an origin (a Point) and a radius

public class Circle {
    public Point center;
    public double radius;

    // constructors
    Circle() {
	center = new Point(0,0);
	radius = 0.0;
    }
    
    Circle(double x, double y, double r) {
	center = new Point(x,y);
	radius = r;
    }

    // Compute the area
    public double Area() {
	return Math.PI * radius * radius;
    }
	
    // toString is called when you use System.out.println
    public String toString() {
	return "Center: " + center.toString() + 
	    "  Radius: " + radius +
	    "  Area: " + Area();
    }
}