Label does not show in window

Vaadin 6 / 7 / 8
1

Just downloaded version 7 alpha2 and tried the following. Label does not show in the window. only text box shows. Any ideas?


public void init(WrappedRequest request) {
		VerticalLayout v = new VerticalLayout();
		Label label = new Label("Hello Vaadin user");
		TextField tf = new TextField() ;
		v.addComponent(tf);
		v.addComponent(label);
		label.setPropertyDataSource(tf);
		setContent(v);
	}
2 
tf.setImmediate(true);