Have you ever thought that a TextField's immediateness just isn't enough? Here's a SuperImmediateTextField! This way you can track the user's typing on-the-go, or even each keypress individually, if you want! Important Note: While the component does inherit Vaadin's TextField, it is not completely feature complete with it. setSecret() will probably not work, and neither is it intended for a multi-line use - so setRows(), setColumns() will probably be out of the question, too. This is my bad...