WebApplicationContext in Vaadin 7

hi guys,

I’m new to learn Vaadin,
I followed example of browser information : http://demo.vaadin.com/sampler#BrowserInformation

where in my project, I can’t find packet for both

com.vaadin.terminal.gwt.server.WebApplicationContext;

and

com.vaadin.terminal.gwt.server.WebBrowser;

I searched on web a bit find that WebBrower was moved to com.vaadin.server.WebBrowser, but i didint find the path for WebApplicationContext,

hope somebody could help me find it out,

regards.

aha
I found the solution here:
https://vaadin.com/wiki/-/wiki/Main/Accessing%20web%20page%20and%20browser%20information