Java Iterator backed by a ResultSet

Question

I\'ve got a class that implements Iterator with a ResultSet as a data member. Essentially the class looks like this:

public class A implements Iterator{
            


        

Answer 1

ResultSet has an 'isLast()' method that might suit your needs. The JavaDoc says it is quite expensive though since it has to read ahead. There is a good chance it is caching the look-ahead value like the others suggest trying.