title: JTable display data in arrayList
body: <p>coding in Java Eclipse here. Making a booking system. The idea is to take the info from the database ,store it in the ArrayList and from the ArrayList show it in the GUI through JTable. Having some problems with the last part and just can't figure it out..
  ArrayList:</p>
  
  <pre><code>import java.util.ArrayList;
  
  public class CarList
  {
     private ArrayList&lt;Car&gt; cars;
  
     public CarList()
     {
        cars = new ArrayList&lt;Car&gt;();
     }
  
     public int getNumberOfCars()
     {
        return cars.size();
     }
  
     public Car getCar(String CarMake)
     {
        for (int i = 0; i &lt; cars.size(); i++)
        {
           if (cars.get(i).getMake() == CarMake)
           {
              return cars.get(i);
           }
        }
        return null;
     }
  
     public int size()
     {
        return cars.size();
     }
  
     public void add(Car car)
     {
        if (!this.ModelExists(car.getModel()))
        {
           cars.add(car);
        }
  
     }
  
     public Boolean ModelExists(String Model)
     {
  
        for (Car c : cars)
        {
           if (c.getModel().equals(Model))
           {
              return true;
           }
        }
        return false;
     }
  
     public void remove(String CarMake)
     {
        for (int i = 0; i &lt; cars.size(); i++)
        {
           if (cars.get(i).getMake() == CarMake)
           {
              cars.remove(i);
           }
        }
  
     }
  
     public String toString()
     {
        String returnStr = "";
  
        for (int i = 0; i &lt; cars.size(); i++)
        {
           Car temp = cars.get(i);
  
           returnStr += temp + "\n";
        }
        return returnStr;
     }
  
  
  }
  </code></pre>
  
  <p>Adapter to get the data from the db to the arraylist:</p>
  
  <pre><code>public CarList getAllCars()
     {
        MyDatabase myDB = new MyDatabase();
        CarList cars = new CarList();
        try
        {
           myDB.openMySQLDatabase("db", "root", "");
  
           String sql = "SELECT Make, Model, LicenseNumber, Color, Year," +
                  "HorsePower, TimeUntilService, ConsumptionPerKm," +
                  "NumberOfSeats, NumberOfDoors, Transmission, ClimateControl,Price "
                 + "FROM cars";
           System.out.println(sql);
           Object[][] result = myDB.returnSQLQueryResult(sql);
  
           for (int rows = 0; rows &lt; result.length; rows++)
           {
              System.out.println("result row");
                 String make = (String) result[rows][0];
                 String model = (String) result[rows][1];
                 String licenseNumber = (String) result[rows][2];
                 String color = (String) result[rows][3];
                 int year =  (int) result[rows][4];
                 String horsePower = (String) result[rows][5];
                 String timeUntilService = (String) result[rows][6];
                 String consumptionPerKm = (String) result[rows][7];
                 int numberOfSeats = (int) result[rows][8];
                 int numberOfDoors = (int) result[rows][9];
                 String transmission = (String) result[rows][10];
                 String climateControl = (String) result[rows][11];
                 int price = (int) result[rows][12];
  
                 cars.add(new Car(make, model, licenseNumber, color, year, horsePower, 
                       timeUntilService, consumptionPerKm,  climateControl, numberOfSeats, numberOfDoors, transmission, climateControl, price));
  
  
           }
        }
        catch (SQLException e)
        {
           e.printStackTrace();
        }
        catch (ClassNotFoundException e)
        {
           e.printStackTrace();
        }
        finally
        {
           try
           {
              myDB.closeDatabase();
           }
           catch (SQLException e)
           {
              e.printStackTrace();
           }
        }
        System.out.println(cars.size());
        return cars;
     }
  </code></pre>
  
  <p>JTable:</p>
  
  <pre><code>panelBottomRight = new JPanel();
        panelBottomRight.setLayout(new BorderLayout());
        panelBottomRight.setBorder(new TitledBorder(BorderFactory
              .createLineBorder(Color.black), "[Cars]", 2, 0));
  
        tableBottomRightCenter = new JPanel();
        tableBottomRightCenter.setLayout(new BorderLayout());
  
        String[] columnNames = { "Make", "Model", "LicenseNumber", "Color",
              "Year", "HorsePower", "TimeUntilService",
              "ConsumptionPerKm", "NumberOfSeats", "NumberOfDoors",
              "ClimateControl" };
        CarList cars= new CarList();
        String[][] data = {};
  
        // Create table with database data
        tableBottomR = new JTable(data, columnNames);
  
        tableBottomR.setAutoCreateRowSorter(true);
        tableBottomR.getTableHeader().setReorderingAllowed(false);
        tableBottomR.setModel(new DefaultTableModel(data, columnNames)
  
        {
           @Override
           public boolean isCellEditable(int rowIndex, int columnIndex)
           {
              return false;
           }
        });
  
        tableBottomRightCenter.add(tableBottomR, BorderLayout.CENTER);
  
        scrollPane2 = new JScrollPane(tableBottomR);
        scrollPane2
              .setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);
  
        tableBottomRightCenter.add(scrollPane2);
  
        panelBottomRight.add(tableBottomRightCenter, BorderLayout.CENTER);
  </code></pre>