Filling my Jtable like this i only get empty colums. No query results.

Code in Frame/Gui(view)
Java Code:

String[] tableColumnsName = {"col 1","col 2","col 3","col 4","col 5","col 6","col 7","col 8"};
        DefaultTableModel aModel = (DefaultTableModel) uitlenPerSpeelgJTable.getModel();
        aModel.setColumnIdentifiers(tableColumnsName);
        aModel.addRow(lijst.getSpeelgoedCode());
        uitlenPerSpeelgJTable.setModel(aModel);


Code in MODEL class, result method:
Java Code:
public static Overzicht[] getSpeelgoedCode(){

   ResultSet r = Database.executeSelectQuery( "select * from uitleen order by speelgoed_code");
   
   try {
        java.sql.ResultSetMetaData rsmd = r.getMetaData();
        int colNo = rsmd.getColumnCount();

        while(r.next()){
            Object[] objects = new Object[colNo];
            
            for(int i=0;i<colNo;i++){
                objects[i]=r.getObject(i+1);
            }
           
       }
      }
    catch (SQLException e) {
        System.out.println("Overzicht: getSpeelgoedCode: " + e.toString());
        System.out.println(e.getMessage() + "\n" + e.getSQLState() + "\n" + e.getErrorCode());
    }

 return objects;