SQL Exception, JDBC API2

Question

I'm trying to develop a web service to manage some results from a query, that includes creating a String[] array. The problem is that I'm required to define the positions of the String[]. So I need to use the last(); or absolute(-1); I made the following:
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection("jdbc:oracle:thin:@10.20.108.71:1521:think","system","manager");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT * FROM " + nTabla);
//rs.last();
rs.absolute(-1);
In both cases I get an: SQLException, Invalid operation for forward only resultset: absolute (or last).
I ve made some researching, and it seems the driver must be JDBC API 2 compilant, I ve been using the classes12.jar that comes with the 9iClient. Any suggestions? or Is something I can do? Any comments will be helpful!
Thanks a lot.
Ruy

Answer 1

Hi
You need to pass ResultSet.TYPE_SCROLL_SENSITIVE constant value to createStatement method to get a scrollable resultset object. See the code snippet below.
// create a statement object which creates a Scrollable resultset
stmt = connection.createStatement(
ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_READ_ONLY
ResultSet rs = stmt.executeQuery("SELECT * FROM " + nTabla);
//rs.last();
rs.absolute(-1); );
Sample application which demonstrates the scrollable resultset is available at http://otn.oracle.com/sample_code/tech/java/sqlj_jdbc/files/jdbc20/jdbc20.htm
OTN Team