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Is it possible to find event fire chain in java?

I wanted to know do events have a priority in being fired or they are fired in the order they were registered?
For example I have a table and has two events on it,SelectionChanged and MouseClick,which one fires first if I click on a row?

See the class EventQueue. This class has all what you need, including the origin event (mouse or key event) for your selection event.

if the order of firing the events is important for You, just set up a chain of listeners, ie Listener one will notify listener two etc, so you could handle the order.
Also check this for more information:
Another question

personally, I think Observer pattern is usefully for your,it's deserved.

Key press events for GXT FileUploadField

GXT 3.x only.
It is becoming apparent to me that Sencha had deliberately designed FileUploadField to shunt off all key press events from ever being detected.
I tried to intercept onBrowserEvent(Event) and could not detect any key press events which I would have generated by keypresses while having focus on the FileUploadField component.
Where is the key-press event shunt?
I could not find any keypress handler insertion methods.
I wish to allow triggering the file upload by either press on the space-bar or enter key.
Short of rewriting a whole new component from scratch, could someone advise me what I could do to achieve my goal of a keyboard activated file upload?

onBrowserEvent won't recieve any events unless you sink them - did you make sure to call sinkEvents? How are you adding handlers? If you use addDomHandler, it will sink them for you, but addHandler either assumes that they are not dom events, or that you already called sinkEvents. Without sinking an event, the browser doesn't know to pass that event on to a GWT widget. If all events were sunk automatically, then every time you moved the mouse across the page you would see a firestorm of events as mousemove fired for every widget you passed, and all of its parents.
If you override onBrowserEvent, then you are building the method that describes how to handle the actual event that comes from the browser - that is where the com.google.gwt.user.client.DOM class wires into the Widget to give it events. Short of making that method final, there is no way to prevent you, the widget user, from getting those events as long as the browser is generating them and passing them through the event listener.
Even if onBrowserEvent has been overridden and made final, you can still get access to many events by creating a NativePreviewHandler and checking where the event is occurring. This gets you in to the event before it even goes to the widget itself - there you can call NativePreviewEvent.cancel() to prevent it from happening on the widget itself, or you can handle it early in the handler.

How can I force an event listener to execute last in java?

I have a JTextPane that has a DocumentListener waiting for changes to the underlying HTML document. When the content changes, the event uses JTextPane.scrollToReference to move the view to a certain reference anchor. The problem is that the underlying View in the JTextPane is also listening to the document changes, and doesn't update until after my listener executes, which causes an exception. Is there any way I can force my DocumentListener to execute after any other event listeners for that particular event? Or is there some way I can wait for the view to be updated before executing my code?

First try to use SwingUtilities.invokeLater() for the listener that has to be executed as last. If that doesn't work, build your own priority queue.

Document is model fro JTextComponents, then not good idea put there two or more Listeners wrote changes to the Document,
all event should be done if model invoke all implemented event to the view, then only if are all events done in the view, then is possible moving with JViewport
no idea whats Listener you are implemented, but DocumentListener (e.g.) with FocusListener (e.i.) can creating endless loop with nice exception from RepaintManager
remove Listener that generating exceptions, add Listener if is really required, remove uselles Listeners immediatelly,
Swing quite no guarentee ordering of Listeners, nor events from multiplayed Listeners betweens model_to_view and vice versa
you can testing if Listeners firing events subsequently or gradually by pushing of required event from Swing Action (delayed from Swing Timer) or for asynchronous Listeners (freezed) by Thread.sleep(int)

I wound up having to extend the Viewport and JScrollPane classes to accomplish this. I exposed a listener for the viewport's change event and added my logic in there (which ensured it was the last code executed in the rendering chain).

TableViewer: how to force a selection change

When invoking tableViewer.getTable().selectAll() the registered selection listeners will not be notified (as usual for all kind of programmatic selection changes in SWT - according to my knowledge). How can I trigger an internal selection change to the TableViewer so it notifies all listeners?

You can do this:
yourTableViewer.getTable().notifyListeners( SWT.Selection, null );
Where null is an Event. Remember that this is the Event received by your listener.

Anyway to control the order events fire in Swing

Is there anyway that I can control the order in which events are fired in my Swing application?
For example, I have a MouseListener and an ActionListener for a component. Can I make it so the MouseListener always fires before the ActionListener?
Seems to me if I add the MouseListener before the ActionListner, I am just praying that they will fire in that order.
Now I understand that coding this way is bad practice and that you should not count on the order of events firing, but for this situation I am encountering, it is a must.
Thanks

If you have an action triggered off of a one listener that needs to happen before the other then change your logic.
Either combine the listeners so that a single listener gets both events and holds onto one temporarily if needed. Or only add one listener and have it call the appropriate method or create a new event after it finishes.

Wrap the ActionListener code in a SwingUtilities.invokeLater(...). The code will be added to the end of the EDT.
I would still have both listeners in the same class so the dependency is well documented.