viewCars

public void launch () {
        Stage viewCars = new Stage();
        viewCars.setTitle("View All Cars");

        GridPane mainFrame = new GridPane();
        // Stores the input fields.
        GridPane input = new GridPane();

        numPlate= new TextField();
        numPlate.setOnAction(e -> search());
        numPlate.setPromptText("Number Plate");
        input.add(numPlate, 0, 0);
        model = new TextField();
        model.setOnAction(e -> search());
        model.setPromptText("Model");
        input.add(model, 1, 0);
        vehType = new TextField();
        vehType.setOnAction(e -> search());
        vehType.setPromptText("Vehicle Type");
        input.add(vehType, 2, 0);
        colour = new TextField();
        colour.setOnAction(e -> search());
        colour.setPromptText("Colour");
        input.add(colour, 3, 0);
        mileage = new TextField();
        mileage.setOnAction(e -> search());
        mileage.setPromptText("Mileage");
        input.add(mileage, 4, 0);
        accidentHistory = new TextField();
        accidentHistory.setOnAction(e -> search());
        accidentHistory.setPromptText("Accident History");
        input.add(accidentHistory, 5, 0);
        transmission = new ComboBox<>();
        transmission.setOnAction(e -> search());
        transmission.getItems().add("Either");
        transmission.getSelectionModel().selectFirst();
        transmission.getItems().add("Automatic");
        transmission.getItems().add("Manual");
        input.add(transmission, 6, 0);
        price = new TextField();
        price.setOnAction(e -> search());
        price.setPromptText("Price");
        input.add(price, 7, 0);


        bodyType = new TextField();
        bodyType.setOnAction(e -> search());
        bodyType.setPromptText("Body Type");
        input.add(bodyType, 0, 1);
        numDoors = new TextField();
        numDoors.setOnAction(e -> search());
        numDoors.setPromptText("Number Of Seats");
        input.add(numDoors, 1, 1);


        minimumSeats = new TextField();
        minimumSeats.setOnAction(e -> search());
        minimumSeats.setPromptText("Minimum Seats");
        input.add(minimumSeats, 2, 1);
        maximumSeats = new TextField();
        maximumSeats.setOnAction(e -> search());
        maximumSeats.setPromptText("Maximum Seats");
        input.add(maximumSeats, 3, 1);

        specialSearch = new ComboBox<>();
        specialSearch.setOnAction(e -> search());
        specialSearch.getItems().add("Cars and Vans");
        specialSearch.getItems().add("Cars Only");
        specialSearch.getSelectionModel().selectFirst();

        // Add all different types of attributes to the dropdown.
        List<String> listOfSpecialAttributes = new ArrayList<>();
        for (TypeOfVehicle typeOfVehicle : TypeOfVehicle.getVehicle()) {
            if (!typeOfVehicle.getSpecialAttribute().isEmpty()) {
                listOfSpecialAttributes.add(typeOfVehicle.getSpecialAttribute());
            }
        }
        // Get rid of duplicates by converting to a set.
        Set<String> uniqueSpecialAttributes = new HashSet<>(listOfSpecialAttributes);

        specialSearch.getItems().addAll(uniqueSpecialAttributes);

        input.add(specialSearch, 4, 1);

        // Stores the results of the search.
        carGrid = new GridPane();

        mainFrame.add(input, 0,0);
        mainFrame.add(carGrid, 0, 1);

        carSearch = new ArrayList<>();
        search();

        viewCars.setScene(new Scene(mainFrame, 900, 1200));

        viewCars.show();
    }
    private void search () {
        // Get all information from text boxes.
        String vehReg = numPlate.getText();
        String vehModel = model.getText();
        String vehT = vehType.getText();
        String vehColour = colour.getText();
        String vehMileage = mileage.getText();
        String vehAccHistory = accidentHistory.getText();
        String vehTransmission = transmission.getSelectionModel().getSelectedItem();
        if (vehTransmission.equals("Either")) vehTransmission = "";
        String vehPrice = price.getText();

        String bodyT = bodyType.getText();
        String numDoor = numDoors.getText();


        String special = specialSearch.getSelectionModel().getSelectedItem();
        if (special.equals("Cars and Vans")) special = "";
        boolean searchOnlyNormal = false;
        if (special.equals("Cars Only")) {
            searchOnlyNormal = true;
            special = "";
        }

        String minSeatsT = minimumSeats.getText();
        String maxSeatsT = maximumSeats.getText();
        // Default seats to minimum and maximum possible values.
        int minSeats = Integer.MIN_VALUE;
        int maxSeats = Integer.MAX_VALUE;

        // If a value is entered, convert it into a integer.
        if (!minSeatsT.isEmpty()) {
            minSeats = Integer.parseInt(minSeatsT);
        }
        if (!maxSeatsT.isEmpty()) {
            maxSeats = Integer.parseInt(maxSeatsT);
        }
        // Remove the previous search results from the grid.
        for (Node node : carSearch) {
            carGrid.getChildren().remove(node);
        }

        // Headers.
        System.out.println("got to labels");
        Label numberPlateHead = new Label("Number Plate:        ");
        Label modelHead = new Label("Model:        ");
        Label colourHead = new Label("Colour:        ");
        Label mileageHead = new Label("Mileage:        ");
        Label accHistoryHead = new Label("Accident History:        ");
        Label tTypeHead = new Label("Transmission Type:        ");
        Label priceHead = new Label("Price:        ");


        // For everyone
        Label arrivalDateHead = new Label("Arrival Date:        ");
        Label sellingDateHead = new Label("Selling Date:        ");

        carGrid.add(numberPlateHead, 0, 0);
        carGrid.add(modelHead, 1, 0);
        carGrid.add(colourHead, 2, 0);
        carGrid.add(mileageHead, 3, 0);
        carGrid.add(accHistoryHead, 4, 0);
        carGrid.add(tTypeHead, 5, 0);
        carGrid.add(priceHead, 6, 0);

        carGrid.add(arrivalDateHead, 9, 0);
        carGrid.add(sellingDateHead, 10, 0);

        int row = 1;

        boolean continueSearch;
        // Loop through all pets in memory.
        for (Car car : Car.getCar()) {
            continueSearch = false;
            // If all the searches are successful.
            if (car.search(vehReg) && car.search(vehModel) && car.search(vehT) && car.search(vehColour)
                    && car.search(vehMileage) && car.search(vehAccHistory)&& car.search(vehTransmission) && car.search(vehPrice) && car.search(bodyT) && car.search(numDoor)
                    && car.seatsBetween(minSeats, maxSeats) && car.search(special)) {
                if (searchOnlyNormal) {
                    if (!car.getTypeOfVehicle().isSpecial) {
                        continueSearch = true;
                    }
                }
                else {
                    continueSearch = true;
                }
                if (continueSearch) {
                    // Make the labels.
                    Label numberPlateLabel = new Label(car.getNumberPlate());
                    Label modelLabel = new Label(car.getModel());
                    Label colourLabel = new Label(car.getColour());
                    Label mileageLabel = new Label(car.getMileage());
                    Label accHistoryLabel = new Label(car.getAccidentHistory());
                    Label tTypeLabel = new Label(car.getTransmissionType());
                    Label priceLabel = new Label(String.format("%.2f", car.getPrice()));


                    // normal labels
                    Label arrivalDateLabel = new Label(car.getArrivalDate());
                    Node sellDateNode;
                    if (car.getSoldDate().equals("")) {
                        sellDateNode = new Button("Sell Car:");
                        ((Button) sellDateNode).setOnAction(e -> sellCar(car));
                    } else {
                        sellDateNode = new Label(car.getSoldDate());
                    }

                    // Place the labels
                    carGrid.add(numberPlateLabel, 0, row);
                    carGrid.add(modelLabel, 1, row);
                    carGrid.add(colourLabel, 2, row);
                    carGrid.add(mileageLabel, 3, row);
                    carGrid.add(accHistoryLabel, 4, row);
                    carGrid.add(tTypeLabel, 5, row);
                    carGrid.add(priceLabel, 6, row);

                    carGrid.add(arrivalDateLabel, 9, row);
                    carGrid.add(sellDateNode, 10, row);


                    // Create reference so we can remove them later.
                    carSearch.add(numberPlateLabel);
                    carSearch.add(modelLabel);
                    carSearch.add(colourLabel);
                    carSearch.add(mileageLabel);
                    carSearch.add(accHistoryLabel);
                    carSearch.add(tTypeLabel);
                    carSearch.add(priceLabel);
                    carSearch.add(arrivalDateLabel);
                    carSearch.add(sellDateNode);

                    row = row + 1;
                }
            }
        }
    }

    void sellCar (Car car) {
        car.soldInfo();
        search();
    }
}