package enumeration; public class Rechner { public double rechne(double op1, double op2, Operation operation) { return operation.anwenden(op1, op2); } public static void main(String[] args) { Rechner r = new Rechner(); double summe = r.rechne(5, 5, Operation.ADDITION); double differenz = r.rechne(6, 3, Operation.SUBTRAKTION); double produkt = r.rechne(6, 3, Operation.MULTIPLIKATION); System.out.printf("%.0f, %.0f, %.0f", summe, differenz, produkt); } }