...public void berechnen() { byte dings = 0; char ziffer1, ziffer2, ziffer3; ziffer1 = (char) roemWert.charAt(0); ziffer2 = (char) roemWert.charAt(1); ziffer3 = (char) roemWert.charAt(2); switch (dings) { case 1: if (ziffer1 == 'I') { dezimalWert = dezimalWert + 1; ….