title: Listeners for JTextField text change
body: <p>I have got a <code>JTextField</code> and I want to add listener to it, which will receive some event as soon as the <code>JTextField</code> looses focus (say when I press with mouse to another component). Also I want a listener to receive an event when the <code>text</code> parameter of <code>JTextField</code> is changed (like when I set <code>jtextfield.setText(anotherText)</code>). Any idea how should I do it?</p>