Does every rs.next() command requery the database?

Question

Submitted for your consideration...
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/sweatshop?user=foobar&password=boofar");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT years_worked FROM smurf_slaves");
while(rs.next) { whatever... }
Does the rs.next() statement query the database with each iteration of the while loop or are all the results of a query dumped into memory in one fell swoop?
Thank you.

Answer 1

hi.,
when we call ResultSet.executeQuery("") it retrieves all the results and dumped into memory in one shot.
after then by using while loop retriving data from ResultSet object.
also we may give size to ResultSet object by using getFetchSize(_)* method.
see the method: http://java.sun.com/j2se/1.4.2/docs/api/java/sql/ResultSet.html#getFetchSize()