WHERE CURRENT OF ???

WHERE CURRENT OF??????UPDATE???DELETE??????????????????????????????????????? ????????????????????????????????????????????????????????????????????????????????????????????? ??????????????????????????????????????????????????????SELECT ?????????????????????????????????

??????

WHERE CURRENT OF ???????????????
Statement s = conn.createStatement();
s.setCursorName("AirlinesResults");
ResultSet rs = conn.executeQuery(
    "SELECT Airline, basic_rate " +
    "FROM Airlines FOR UPDATE OF basic_rate");
Statement s2 = conn.createStatement();
s2.executeUpdate("UPDATE Airlines SET basic_rate = basic_rate " +
    "+ .25 WHERE CURRENT OF AirlinesResults");