import javafx.application.*;
import javafx.beans.*;
import javafx.scene.*;
import javafx.scene.control.*;
import javafx.stage.*;

public class RT17968 extends Application {
    private Group content;

    @Override public void start(Stage stage) throws Exception {
        stage.setScene(new Scene(content = new Group(), 500, 500));
        stage.centerOnScreen();
        stage.show();

        final TextField textField = new TextField();
        textField.setPromptText("Enter Pithy Pun");
        textField.setText("bbbbbbbbbbbbbbbbbbbbb");
        textField.selectionProperty().addListener(new InvalidationListener() {
            public void invalidated(Observable o) {
                System.out.println(textField.getSelection());
            }
        });
        textField.selectAll();
        content.getChildren().add(textField);
    }

    public static void main(String[] args) { launch(args); }
}