You use a lot the @ sign for these things:
I looked back at my other java code,@depreciated also exists.
Now what is the range of a statement made by the @sign?
how does it works?
@UiHandler is an annotation. It is part of the GWT declarative layout mechanism. (See the section on "Simple binding of event handlers").
@deprecated is a javadoc tag.
so when I do
@UiField ListBox listBox;
@UiField Button button;
I could do