Jestem nowicjuszem w JavaFX, a także w Javie. Faceci mogą, proszę, znaleźć ten kod, jeśli tego brakuje, ponieważ mogę już wydrukować elementy z bazy danych za pomocą funkcji println.

public class TableViewController  implements Initializable{

@FXML
private TableView<studentInfo> tblViewer = new TableView<studentInfo>();
@FXML
private TableColumn colID = new TableColumn();
@FXML
private TableColumn colName = new TableColumn();
@FXML
private TableColumn colAddress = new TableColumn();
@FXML
private TableColumn colAge = new TableColumn();
@FXML
private TableColumn colContact = new TableColumn();
@FXML
private Button cmdTest;

@Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
System.out.println("READ");
System.out.println(this.getClass().getSimpleName() + ".initialize"); 
cmdTest.setOnAction(new EventHandler<ActionEvent>() {            
    @Override
    public void handle(ActionEvent event) {
    System.out.println("Button Pressed");                   
    colID.setCellValueFactory(new PropertyValueFactory<studentInfo, Integer>("id"));
    colName.setCellValueFactory(new PropertyValueFactory<studentInfo, String>("name"));
    colAddress.setCellValueFactory(new PropertyValueFactory<studentInfo, String>("address"));
    colAge.setCellValueFactory(new PropertyValueFactory<studentInfo, Integer>("age"));
    colContact.setCellValueFactory(new PropertyValueFactory<studentInfo, String>("contact_num"));
    tblViewer.getItems().setAll(getAllstudentInfo());
    //tblViewer.getColumns().addAll(colID, colName, colAddress, colAge, colContact);
    //System.out.println(tblViewer.getItems().setAll(getAllstudentInfo()));
    }
} );       
}

public class studentInfo{

private final SimpleIntegerProperty idCol;
private final SimpleStringProperty nameCol;
private final SimpleStringProperty addressCol;
private final SimpleIntegerProperty ageCol;
private final SimpleStringProperty contact_numCol;

public studentInfo(Integer id, String name, String address, Integer age, String contact_num){
    this.idCol = new SimpleIntegerProperty(id);
    this.nameCol = new SimpleStringProperty(name);
    this.addressCol = new SimpleStringProperty(address);
    this.ageCol = new SimpleIntegerProperty(age);
    this.contact_numCol = new SimpleStringProperty(contact_num);
  }  
  public Integer getidCol(){
      return idCol.get();
  }
  public void setidCol(Integer id){
      idCol.set(id);      
  }
  public String getnameCol(){
      return nameCol.get();
  }
  public void setnameCol(String name){
      nameCol.set(name);
  }
  public String getaddressCol(){
      return addressCol.get();
  }
  public void setaddressCol(String address){
      addressCol.set(address);
  }
  public Integer getageCol(){
      return ageCol.get();
  }
  public void setageCol(Integer age){
      ageCol.set(age);
  }
  public String getcontact_numCol(){
      return contact_numCol.get();
  }
  public void setcontact_numCol(String contact_num){
      contact_numCol.set(contact_num);
  }        
  }


public List<studentInfo> getAllstudentInfo(){
Connection conn;
List ll = new LinkedList();
Statement st;
ResultSet rs;
String url = "jdbc:mysql://localhost/java_test";
String user = "root";
String pass = "";
String driver = "com.mysql.jdbc.Driver";

try{
    Class.forName(driver);
    conn = DriverManager.getConnection(url, user, pass);
    st = conn.createStatement();
    String recordQuery = ("Select * from student");            
    rs = st.executeQuery(recordQuery);
    while(rs.next()){    
        Integer id = rs.getInt("id");
        String name = rs.getString("name");
        String address = rs.getString("address");
        Integer age = rs.getInt("age");
        String contact_num = rs.getString("contact_num");
        ll.add(new studentInfo(id, name, address, age, contact_num));
        System.out.println(id +","+ name +","+ address +","+ age +","+ contact_num +" "+"added.");
    }            
}catch(ClassNotFoundException | SQLException ex){
    Logger.getLogger(TableViewController.class.getName()).log(Level.SEVERE, null, ex);
}
return ll;
}

A to jest plik FXML:

<?import java.lang.*?>
<?import java.util.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>

<AnchorPane id="AnchorPane" prefHeight="594.0" prefWidth="838.0" xmlns:fx="http://javafx.com/fxml" fx:controller="loadingcsvtotableview.TableViewController">
<children>
<TableView fx:id="tblViewer" prefHeight="521.0" prefWidth="808.0" AnchorPane.bottomAnchor="14.0" AnchorPane.leftAnchor="15.0" AnchorPane.rightAnchor="15.0" AnchorPane.topAnchor="59.0">
  <columns>
    <TableColumn prefWidth="75.0" text="ID" fx:id="colID" />
    <TableColumn prefWidth="175.0" text="Name" fx:id="colName" />
    <TableColumn prefWidth="330.0" text="Address" fx:id="colAddress" />
    <TableColumn prefWidth="75.0" text="Age" fx:id="colAge" />
    <TableColumn prefWidth="150.0" text="Contact Number" fx:id="colContact" />
  </columns>
 </TableView>
 <Button fx:id="cmdExport" layoutX="14.0" mnemonicParsing="false" prefHeight="30.0" prefWidth="112.0" text="Export Data" AnchorPane.topAnchor="21.0" />
 <Button fx:id="cmdClose" layoutX="144.0" mnemonicParsing="false" prefHeight="30.0" prefWidth="112.0" text="Close" AnchorPane.topAnchor="21.0" />
 <Button id="cmdClose" fx:id="cmdTest" layoutX="386.0" layoutY="21.0" mnemonicParsing="false" prefHeight="30.0" prefWidth="112.0" text="Test" />
 </children>
</AnchorPane>

Co mi brakuje? Pomóżcie mi chłopaki ..