title: getText() or textProperty.getValue() ? -> TextFields
body: <p>Iam working on a Textfield for numbers. I need to copy the input from one textfield to the other.</p>
  <p>What would the difference be between these two:
  <code>FieldTwo.setText(FieldOne.getText());</code>
  And
  <code>FieldTwo.setText(FieldOne.textProperty().getValue());</code></p>