Problems using ResultSet to update a DB record

If I run the code listed at the end of this message, an exception is thrown.  Here is the output during a recent execution attempt:

1
26768073
java.sql.SQLException: Invalid operation for read only resultset: updateString
        at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
        at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
        at oracle.jdbc.driver.BaseResultSet.updateString(BaseResultSet.java:353)

        at oracle.jdbc.driver.OracleResultSet.updateString(OracleResultSet.java:
2824)
        at test2.main(test2.java:46)


Why is this happening?





    public static void main (String args[])
    {
          String path;
          Statement  stmt = null;
          Connection con = null;
          ResultSet results = null;
          
          try
          {
                Class.forName(JDBC_DRIVER).newInstance();
                path = DB_DRIVER + ":@" + DB_HOST + ":" + DB_PORT + ":" + DB_SID;
          
                con = DriverManager.getConnection(path, USER, PWD);
                //con.setAutoCommit(false);
                stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
                                       ResultSet.CONCUR_UPDATABLE);      
                
                results = stmt.executeQuery("SELECT * FROM " + TABLE + " WHERE city = \'WDC\'");
                
                
                while (!results.isLast())
                {
                      results.next();
                      System.out.println(results.getRow());
                      System.out.println(results.getInt("ID"));
                      results.updateString("description", "TEST");
                }
                
                
                
                //System.out.println(results.getFetchSize());
                
                
                
                
          }
          catch (Exception ex) { ex.printStackTrace(); }
            finally
            {
                  try
                  {
                        if (stmt != null)
                              stmt.close();
                        if (con != null)
                              con.close();
                  }
                  catch (SQLException ex) { System.err.println("Cannot close connection to Oracle DB."); }
            }
    }