public String getApplicationName() {
        return applicationName;
    }
Returns the name to use in the ServletResponse's <b><code>WWW-Authenticate</code></b> header.
<p/>
Per RFC 2617, this name name is displayed to the end user when they are asked to authenticate.  Unless overridden
by the {@link #setApplicationName(String) setApplicationName(String)} method, the default value is 'application'.
<p/>
Please see {@link #setApplicationName(String) setApplicationName(String)} for an example of how this functions.

@return the name to use in the ServletResponse's 'WWW-Authenticate' header.
web/src/main/java/org/apache/shiro/web/filter/authc/HttpAuthenticationFilter.java