Java SE (Java Platform, Standard Edition)

Hi,

I made a simple app login in Netbeans 8.0 and jdk8.

Whenever the user leaves the field empty: the color changes.

userBd.focusedProperty().addListener( new ChangeListener(){
                public void changed(ObservableValue observable, Object oldValue, Object newValue) {
                    if(newValue.toString().equals("false") && ( userBd.getLength() == 0 ))
                       userBd.setStyle("-fx-border-color: red;");
                     else
                       userBd.setStyle("-fx-border-color: null;");
                   
                       
               }
         });

Only the fields that move up or down ...

How to solve?

Regards

Jomar