Cara Membuat Auto Number pada TextField Java

membuat textfield java auto number


Public static void main(Strign []args){
autoID{};
        if ("".equals(tf_kod_bar.getText())) {
            tf_kod_bar.setText("601");
         }



    void autoID() {
        try {
            stat = koneksi.con.createStatement();
            String sql_p = "select * from tabel_barang order by id_barang desc limit 1";
            ResultSet isi_p = stat.executeQuery(sql_p);
            while (isi_p.next()) {
                id = Integer.parseInt(isi_p.getString("id_barang")) + 1;
                id_emp = String.valueOf(id);
            }
            tf_kod_bar.setText(id_emp);
        } catch (Exception e) {
        }
    }


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