To call inherited final method produce "cannot find symbol" error

Question

I have this code:

import javafx.scene.control.TextArea;
import javafx.event.EventHandler;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.KeyCode;
import javafx.scene.Node;

public class InitialTextFixedArea extends TextArea{
    public InitialTextFixedArea(String testoIniziale){
        super(testoIniziale);
        EventHandler<KeyEvent> eventHandler = new EventHandler<KeyEvent>(){
            @Override
            public void handle(KeyEvent e){
                if((e.getEventType() == KeyEvent.KEY_PRESSED & this.getCaretPosition() < 5)
                    |(this.getCaretPosition() == 5 & e.getCode() == KeyCode.BACK_SPACE)){
                    this.setEditable(false);
                }else{ 
                    this.setEditable(true);
                }
            }
        };
        this.addEventFilter(KeyEvent.KEY_PRESSED, eventHandler);
        this.addEventFilter(KeyEvent.KEY_RELEASED, eventHandler);
    }
}

and when I try to compile, I obtain more than one error of type "cannot find symbol", where the symbols are the getCaretPosition() and setEditable() methods. Do not I inherit these methods from TextArea that inherit them from TextInputControl?

Thank you for the answers!

score 0 · Accepted Answer · answered Nov 14 '17 at 23:16

0

this in this context points to the EventHandler, which doesn't have those methods. Change it to InitialTextFixedArea.this.getCaretPosition() or just getCaretPosition().

answered Nov 14 '17 at 23:16

shmosel

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score 0 · Answer 2 · answered Nov 14 '17 at 23:17

0

You're calling this.getCaretPosition() from within an EventHandler. In that case this refers the the event handler and not to the TextArea.
Try calling it without this.

answered Nov 14 '17 at 23:17

Robert Kock

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To call inherited final method produce "cannot find symbol" error

2 Answers2