JavaFX TextArea onChange event

Question

Good day developers :)

Does JavaFX component, TextArea, have support for some event like onTextChange or similar? Yes, I know for keyPressed, keyTyped ... but how to handle event if another "action" do changes on TextArea (eg. txArea.setText("some text")).

Answer 1

import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;

    textArea.textProperty().addListener(new ChangeListener<String>() {
        @Override
        public void changed(final ObservableValue<? extends String> observable, final String oldValue, final String newValue) {
            // this will run whenever text is changed
        }
    });

Answer 2

As with all of JavaFX, just add a listener to the TextArea textProperty().

Answer 3

Using Lambda expressions

textArea.textProperty().addListener((obs,old,niu)->{
    // TODO here
});