Method windowLostFocus

StickyNotes/src/com/dosse/stickynotes/Note.java:240–244

(WindowEvent e)

        });
        addWindowFocusListener(new WindowAdapter() {
            @Override
            public void windowLostFocus(WindowEvent e) {
                //if focus is lost, save the current state
                Main.saveState();
            }

            @Override
            public void windowGainedFocus(WindowEvent e) {