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