Serious threading issue in sample code in File Chooser tutorial

The following page:

http://docs.oracle.com/javafx/2/ui_controls/file-chooser.htm

contains a sample application that calls AWT APIs on the FX Application Thread. Specifically, the Desktop.open() method is called from an action event handler. This threading pattern is wrong and shouldn't be advertised because it causes the application to freeze on certain platforms (e.g. see RT-31468).

The correct pattern is to wrap the call to any AWT APIs in a runnable and submit it for execution via java.awt.EventQueue.invokeLater():

void fxEventHandler() {
   EQ.invokeLater(() -> {
      Desktop.open(...);
   });
}