This post discusses how to use Hasura Actions to convert Java REST APIs to GraphQL. It explains that writing a GraphQL server from scratch involves setting up the schema, type definitions, and resolvers. However, Hasura reduces this complexity by providing instant GraphQL CRUD for databases like Postgres, covering most data-fetching and real-time subscription use-cases. The post then explores how to define types and configure endpoints using Actions in Hasura Console. It demonstrates the process of creating a new Hasura Cloud project, defining Action and Type definitions, generating boilerplate code for Java server setup, setting up Spring Boot, exposing the server on a public URL, and finally testing the GraphQL API with a mutation. The post also covers permissions, relationship data, existing REST APIs, query actions, and supported frameworks.