How to use Result Set correctly?

Question

Java

I don’t understand how to go through the result if it closes immediately after the request is returned from the database?
I read the doc and did not understand how to go through it ..

mappedObjects.put("company",comp);
        ResultSet res = findInDatabase(mappedObjects);
        System.out.println(res.isClosed()); // true 
        while(res.next()){ // Это создаёт Exception ? 
            // code 
        }

Exception:

java.sql.SQLException: Operation not allowed after ResultSet closed

Answer 1

Understand what's going on inside findInDatabase. Probably there is a closure.