Question

I’m working with GWT and sometimes I’m getting exception called UmbrellaException
I was always wondering why is it called like that? It is because there is a lot of error (rain) that you have to protect the application (use umbrella not to get wet).

Answer 1

According to the first link when i googled the term “gwt umbrellaexception”:

A RuntimeException that collects a Set of child Throwable together.
Typically thrown after loop, with all of the exceptions thrown during that loop,
but delayed so that the loop finishes executing.

It’s just a Collection of Exception (Throwable actually). Read the API Doc for more information.