@Override public void encodeMarkupBegin(FacesContext facesContext, UIComponent uiComponent) throws IOException { ResponseWriter responseWriter = facesContext.getResponseWriter(); OutputTooltipResponseWriter outputTooltipResponseWriter = new OutputTooltipResponseWriter(responseWriter, uiComponent); OutputTooltip outputTooltip = (OutputTooltip) uiComponent; if (outputTooltip.getFor() == null) { if (facesContext.isProjectStage(ProjectStage.Development)) { logger.error( "The outputTooltip needs to point to something. Try using its 'for' attribute to point to an 'id' in the component tree."); } } // Mojarra's HTML Basic calls encodeEnd for fun super.encodeMarkupEnd(facesContext, uiComponent, outputTooltipResponseWriter); }