// Methode untuk menginsert data node
    public void insertLelang(Object[] data) {
        try {
            System.out.println("0 " + data[0]);
            System.out.println("1 " + data[1]);
            System.out.println("2 " + data[2]);
            String SQLInsert = "INSERT INTO dblelang.lelang (idlelang, namalelang, isilelang, waktu) VALUES ('','" + data[0] + "','" + data[1] + "','" + data[2] + "');";
            int stat = database.exeQuery(SQLInsert);
            System.out.println(SQLInsert);
            if (stat == 0) {
                JOptionPane.showMessageDialog(null, "Maaf, data tidak dapat disimpan");
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }