How to get # of rows in SQL Query ResultSet

Question

I need to get the # of rows in a sql query resultset so I can create arrays of the size of the # or rows returned. This is how I do it so far. Is there a better way without running the query twice?
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery(query);
while (rs.next())
     i++;     
aid = new int;
i=0;
rs = stmt.executeQuery(query);
while (rs.next())
     aid[i] = rs.getInt(1);
Theres actually a few more arrays but for this I just used one to show what I was doing. Notice stmt.executeQuery needed to be called twice, once to get the count to set the size of the array and once to get the values.

Answer 1

nope - there's no easy way.
the right thing to do is to iterate through the ResultSet, load its contents into a List of Objects or some other data structure, and close it out right away. You can get the count of rows while you do it. return the contents in the object or data structure for clients to use. you should never be passing a ResultSet around.
why do you need to know, anyway?
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