Generate schema.json during build step prior to starting the server

[Raphael Hsieh]

Is there a way to generate my projects schema.json prior to starting the server via only Java?

I've seen that I can use an introspection(http://graphql.org/learn/introspection/) query to generate the schema.json, however that requires the graphql server to have been started first, so that I can run a query against it. Is there a way to generate the schema.json without needing to do this ?

I've been trying to do something similar to the graphqlServlet here: https://github.com/graphql-java/graphql-java-servlet/blob/master/src/main/java/graphql/servlet/GraphQLServlet.java#L238