Calling an external application (i.e. Windows Calculator) in a GWT web application

Question

I am trying to call an external windows application (i.e. calc.exe) when a user clicks on a button in a GWT web application. Is there a way on how to do it?

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Answer 1

A webapp should not and can not call a local program..

GWT compiles client classes to javascript and there's no support for Runtime, so GWT doesn't know how to transform your Runtime usage to JS.

For a list of GWT supported classes (client side), see http://www.gwtproject.org/doc/latest/RefJreEmulation.html