Lösung von Objekte und Klassen

Basisklasse

public class Circle {

        public double x,y;     

        public double r;

        public double circumference(){    

                return 2*Math.PI*r;

        }

        public double area(){           

                return Math.PI*r*r;

        }

}

Testklasse

public class CircleTest {

        public static void main(String[] args) {

                Circle c;

                c = new Circle();

                c.x = 2.0;

                c.y = 2.0;

                c.r = 1.0;

                double a = c.area();

                System.out.println(a);

                System.out.println(c.circumference());

        }

}

Erstellt von Braun Daniel