CHANGES.org

JUG

MainSceneController

Without Bindings

/**
 * on key typed
 */
@FXML
public void textChanged() {
    if (LOG.isTraceEnabled()) { LOG.entry(); }

    //

    label.setText(Integer.toString(textField.getText().length()));
    checkBox.setSelected(textField.getText().length() == 0);
}

With Bindings

label.textProperty().bind(textField.textProperty().length().asString());

checkBox.selectedProperty().bind(textField.textProperty().length().isEqualTo(0));

With Bindings & Model

private final StringProperty text = new SimpleStringProperty();
public final StringProperty textProperty() { return text; }
public String getText() { return text.get(); }
public void setText(String text) { this.text.set(text); }

// constructor

textProperty().addListener((observable, oldValue, newValue) -> {
        if (LOG.isDebugEnabled()) { LOG.debug("oldValue={}, newValue={}", oldValue, newValue); }
    });

setText("Hello World");

// initialize

textField.textProperty().bindBidirectional(textProperty());
label.textProperty().bind(textProperty().length().asString());
checkBox.selectedProperty().bind(textProperty().length().isEqualTo(0));

World Clock

AnimationTimer timer = new AnimationTimer() {
        /**
         * documentation
         */
        @Override
        public void handle(long now) {
            setDateTime(ZonedDateTime.now(getZoneId()));
        }
    };
timer.start();