read data

String urlValue="";

        try {
            Class.forName("com.mysql.jdbc.Driver");
            urlValue="jdbc:mysql://localhost/pbo?user=root&password=";
            Connection conn=
                    DriverManager.getConnection(urlValue);

            Statement st=conn.createStatement();
            ResultSet rs=st.executeQuery("Select pasien_rawat.*, daftar_pasien.*, poli.* from pasien_rawat, daftar_pasien,poli WHERE pasien_rawat.no_cm=daftar_pasien.no_cm AND pasien_rawat.poli=poli.kode");

            System.out.println("NO. \tNo.cm \tNama \tPoli ");
            int no = 0;
            while(rs.next()){
                no++;
                System.out.print(no+"\t");
                System.out.print(rs.getString("no_cm")+"\t");
                System.out.print(rs.getString("nama")+"\t");
                System.out.println(rs.getString("poli.poli")+"\t");

            }

    /*   Statement st=conn.createStatement();
            boolean rs=st.execute("INSERT INTO daftar_pasien(no_cm, nama,tgllahir ,umur, sat, kk, alamat)"
                    +"VALUES(no_cm, 'Tambahan','0000-00-00', 23, 'thn', 'hai', 'jeporo')");
    */

            conn.close();

        }


        catch (SQLException e){
            System.out.println("koneksi gagal" + e.toString());
        }

        catch (ClassNotFoundException e){
            System.out.println("jdbc.Driver tidak ditemukan");
        }