I am trying to get data from a database using 3 Jcomboboxes and then put the data in a Jtable and i am getting a empID=(int)employees[selectedIndex-1][1]; 

public void updateTable()
  {
    int selectedIndex=employeeCmb.getSelectedIndex();
    int empID;
    if (selectedIndex==0)
      empID =-1;
    else
      empID=(int)employees[selectedIndex-1][1];
    String adate=dateLbl.getText();
    
    q.connectToDatabase();
    empAppointments=q.getEmpAppointments_OA(empID,adate);
    int appCount=empAppointments.length;
    
    Object [][]empAppointments2 = new Object[appCount][4];
    for (int i =0; i < appCount; i++)
    {
      for (int j=0; j < 4;j++)
      {
        empAppointments2[i][j]=empAppointments[i][j];
        model=new DefaultTableModel(empAppointments2,colNames);
        table.setModel(model);
        q.disconnectFromDatabase();
     //    System.out.println(colNames);
      }
    }
  }
   
   
  public void actionPerformed(ActionEvent e)
  {
    if(e.getSource()==insBtn)
    {
       updateTable();
      
    }
    else if (e.getSource()==nextBtn)
    {
     l=l+86400000;
     d=new Date(l);
     s=sdf.format(d);
     dateLbl.setText(s);      
    }
     
    else if (e.getSource()==preBtn)
    {
      l=l-86400000;
      d=new Date(l);
      s=sdf.format(d);
      dateLbl.setText(s); 
    }
   
    else if (e.getSource()==delBtn)
    {
    int deleted=q.deleteOneClient(4);
   
   
   
    }
   
    else if(e.getSource()==updBtn)
    {
   int inserted=q.insertOneClient("ali","rahim","123 Some Rd","ddd@eee","3456777");
   
   
    }
  }

  public static void main(String[] args)
  {
   Queries q = new Queries();
   new BookingCard();
  }


}