String insertString = "INSERT INTO listings(Seller, Title, Close_Time, Price, Condition)"
                + " VALUES('"+par.getSellerName()+"', '"+par.getItemName()+"', "
                +closetime+", "+par.getPrice()+", '"+par.getCondition()+"')";

pst = con.prepareStatement(insertString);
pst.executeUpdate();
ResultSet rs = pst.getGeneratedKeys();

pst = con.prepareStatement(
                    "INSERT INTO listings(Seller, Title, Close_Time, Price, Condition)"
                    + "VALUES(?,?,?,?,?)", Statement.RETURN_GENERATED_KEYS);
pst.setString(1, par.getSellerName());
        pst.setString(2, par.getItemName());
        long closeTime = getTimeMills(par.getTimeOver());
        pst.setLong(3, closeTime);
        pst.setDouble(4, par.getPrice());
        pst.setString(5, par.getCondition());
        pst = con.prepareStatement(insertString);
        pst.executeUpdate();
        ResultSet rs = pst.getGeneratedKeys();