public boolean execute(ActionContext actionCtx) throws Exception 
{
    // ---------------------------------------------------------- Public Methods
        // Is there a form bean associated with this ActionConfig?
        ActionConfig actionConfig = actionCtx.getActionConfig();
        String name = actionConfig.getName();
        if (name == null) {
            actionCtx.setActionForm(null);
            return (false);
        }
        if (LOG.isTraceEnabled()) {
            LOG.trace("Look up form-bean " + name);
        }
        // Look up the corresponding FormBeanConfig (if any)
        FormBeanConfig formBeanConfig =
            actionConfig.getModuleConfig().findFormBeanConfig(name);
        if (formBeanConfig == null) {
            LOG.warn("No FormBeanConfig found in module "
                + actionConfig.getModuleConfig().getPrefix() + " under name "
                + name);
            actionCtx.setActionForm(null);
            return (false);
        }
        Map scope = actionCtx.getScope(actionConfig.getScope());
        ActionForm instance;
        instance = (ActionForm) scope.get(actionConfig.getAttribute());
        // Can we recycle the existing instance (if any)?
        if (!formBeanConfig.canReuse(instance)) {
            instance = formBeanConfig.createActionForm(actionCtx);
        }
        // TODO: Remove ServletActionContext when ActionForm no longer
        //  directly depends on ActionServlet
        if (actionCtx instanceof ServletActionContext) {
            // The servlet property of ActionForm is transient, so
            // ActionForms which are restored from a serialized state
            // need to have their servlet restored.
            ServletActionContext sac = (ServletActionContext) actionCtx;
            instance.setServlet(sac.getActionServlet());
        }
        actionCtx.setActionForm(instance);
        scope.put(actionConfig.getAttribute(), instance);
        return (false);
}

Create (if necessary) and cache a form bean for this request.