Oracle Lite JDBC trouble getting column names

I am having trouble retrieving the names of the columns of a table using JDBC. I am using Oracle Lite 3.0.624 and it's provided JDBC driver and executing under VC4Java 2.5a (jdk1.1.5 I think).

I am using almost the same code to fetch the Schema names and Table names without any apparent difficulty. However, when I go to get the column name using rset.getString(4), the application core dumps.

Can you see what the problem is? Is there a better way to code this?

Thanks,
Gerald

Code snippet:

...

        Vector vect = new Vector();
        String cname = "";
        s = schema;
        t = table;


        ...

        ResultSet rset = dbMeta.getColumns(null, s, t, null);
        do {
            try {
                cname = new String(rset.getString(4));   // 4=column name
            } catch (SQLException ex) {
                System.err.println("Error getting column name\n" + ex);
            }
            if (cname.length() > 0) {
                vect.addElement(cname);
                System.err.println("Column: " + cname);
            }
        } while (rset.next());
        rset.close();
        return vect;