Returning ResultSet data

Question

i want my class to return data to another class. I know i cant return a ResultSet because my connection closes. Can i return some collection similar to a ResultSet ( something 2 dimensional). Can i return metadata from this class?
thanx

Answer 1

A typical solution is to return an ArrayList (or some other datatype) that contains several objects, each containing the data from the row. For example, if I wanted to return a username/password combination, you can create a User class that simply holds those two values, then each iteration through your ResultSet, create a new object, put the two values in it, and stick it in your ArrayList.
This is probably the most effective way, since any datastructure is generally intended to handle data of a certain type, and since data from your database is most likely varying in types, creating one two-dimensional datastructure is probably not going to be as effective.