public void theQuery(String query) {
    Statement statement = null;
    Connection connection = null;

    try {
         connection = DriverManager.getConnection("jdbc:sqlserver://localhost/PROGRAII","root","");
         statement = connection.createStatement();
         statement.executeUpdate(query);
         JOptionPane.showMessageDialog(null, "Se realizó la operación");
     }
     catch (Exception ex) {
          JOptionPane.showMessageDialog(null, "NO se realizó la operación");
     }
}

private void jButAceptar_actionPerformed(ActionEvent e) {
 try {
inserta.theQuery("insert into ControlAcceso(cedula,email,clave) values('"+this.jTexCedula.getText()+"'," +                      ","+this.jTexEmail.getText()+"','"+this.jTexClave.getText()+"')");                 } catch (Exception ex) {
 JOptionPane.showMessageDialog(null, "No se realizo el query");         }