Yes Arun, But if we add Resource and SlingHttptServletRequest both in adaptables then we can't inject any other dialog field, only resourceResolver will be injected.
Get the resource Resolver in Sling Model without using SlingHttpServletRequest.https://aemsimplifiedbynikhil.wordpress.com/2018/09/03/getting-resource-resolver-in-sling-model-without-using-slinghttpservletrequest/
Following is the method to get resource Resolver without SlingHttpSevletRequest.Getting Resource Resolver in Sling Model. (without using SlingHttpServletRequest) – AEM Queries & Solutions