How to call a variable (which is sealed in public void) after the code from the question description - JavaFX?

Question

Java

Hello. There is a code below. I need to call newValue variable from this code after this code. How to do it? If I call this variable after this code, then it writes an error newValue cannot be resolved to a variable.

// Adding Listener to value property.
    slider.valueProperty().addListener(new ChangeListener<Number>() {
  
       @Override
       public void changed(ObservableValue<? extends Number> observable, //
             Number oldValue, Number newValue) {
  
          infoLabel.setText("Вы выбрали: " + Math.round(newValue.floatValue()));
       }
    });

Answer 1

Declare a global variable at the beginning of the
Number globalValue class declaration;
and inside the changed function, fill it in:
globalValue = newValue;
Then use globalValue

Answer 2

Above you were answered with a crutch for which your hands are torn off. Get your value from slider.getValue()