src/main/java/org/efaps/ui/filter/AbstractAuthenticationFilter.java
@Override
    public void init(final FilterConfig _filterConfig)
        throws ServletException
    {
        super.init(_filterConfig);
        try {
            this.loginHandler = new LoginHandler(AppAccessHandler.getApplicationKey());
        } catch (final EFapsException e) {
            AbstractAuthenticationFilter.LOG.error("AppAccessHandler", e);
        }
    }
@Override
    public void init(final FilterConfig _filterConfig)
        throws ServletException
    {
        super.init(_filterConfig);
        try {
            this.loginHandler = new LoginHandler(AppAccessHandler.getApplicationKey());
        } catch (final EFapsException e) {
            AbstractAuthenticationFilter.LOG.error("AppAccessHandler", e);
        }
    }
Called by the web container to indicate to a filter that it is being
placed into service. The servlet container calls the init method exactly
once after instantiating the filter. The init method must complete
successfully before the filter is asked to do any filtering work.

The web container cannot place the filter into service if the init method
either 1.Throws a ServletException 2.Does not return within a time period
defined by the web container // sets the login handler

@param _filterConfig filter configuration instance
@see #INIT_PARAM_TITLE
@see #title
@see #INIT_PARAM_APPLICATION
@see #loginhandler
@throws ServletException on error