public String validate(String plate) {

        Scanner scanner = new Scanner(plate);
        String districtCode;
        String number;
        String type;
        String district;
        String fra = " fra ";
        if(plate.length()==7){
            districtCode = "" + plate.charAt(0) + plate.charAt(1);
            district = validateDistrict(districtCode);
            number = "" + plate.charAt(2) + plate.charAt(3) + plate.charAt(4) + plate.charAt(5) + plate.charAt(6);
            type = validateVehicleType(Integer.parseInt(number));
        } else {
            type = "Kunne ikke genkendes";
            district = "";
            fra = "";
        }

        return type + fra + district;
    }

    private String validateDistrict(String districtCode) {
        String district = "findes ikke";
        if(districtMap.containsKey(districtCode.toUpperCase())){
            district = districtMap.get(districtCode.toUpperCase());
        }


        return district;
    }

    private String validateVehicleType(int number) {
        boolean search = true;
        int i = 0;
        String type = "Findes ikke";
        while (search){
            if(vehicleTypes[i].isA(number) == true) {
                type = vehicleTypes[i].getVehicleType();
                search = false;
            }
                else if (i == vehicleTypes.length-1) {
                        search = false;
                        }
                else {
                    i++;
                }
            }

        return type;
    }