Question

I am using the mysql java connector. I need java to display the contents of the first column and the second column in different steps. How do I achieve this?

String qry = "select col1,col2 from table1";
Resultset rs = statement.executeQuery(qry);

Answer 1

I’ve posted a sample below:

   Statement s = conn.createStatement ();
   s.executeQuery ("SELECT id, name, category FROM animal");
   ResultSet rs = s.getResultSet ();
   int count = 0;
   while (rs.next ())
   {
       int idVal = rs.getInt ("id");
       String nameVal = rs.getString ("name");
       String catVal = rs.getString ("category");
       System.out.println (
               "id = " + idVal
               + ", name = " + nameVal
               + ", category = " + catVal);
       ++count;
   }
   rs.close ();
   s.close ();
   System.out.println (count + " rows were retrieved");

(From: http://www.kitebird.com/articles/jdbc.html#TOC_5 )

Edit: just re-read the question and think you might mean you want to refer to a column later on in code, instead of in the inital loop as in my example above. In that case, you can create an array and refer to the array later on, or, as another answer suggests you can just do another query.