When to set UI Component private / public in Javafx :

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- If you write  UI component in private controller class then it is mandetory to write annotation
for Example - @FXML
                       Private TextFiled textFiled;

If you declare UI component as public then there is no need to write annotation
for Example : public TextFiled textFiled;

Better practice is to Write annotation and keep all UI component private in Controller class. 

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