menggunakan prepastatmant

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/*
 * NewJFrame2.java
 *
 * Created on Sep 13, 2014, 11:45:53 PM
 */
package aplikasi.yaya.frame;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author AINUNJARIAH
 */
public class NewJFrame2 extends javax.swing.JFrame {
     ResultSet res = null;
    Connection con = null;
    PreparedStatement pstmt = null;
    /** Creates new form NewJFrame2 */
    public NewJFrame2() throws ClassNotFoundException, SQLException {
        initComponents();
        koneksi();
    }
    private void koneksi(){
        try {
       String driver = "com.mysql.jdbc.Driver";
    String url = "jdbc:mysql://localhost/apmasjid";
    String username = "root";
    String password = "";
    Class.forName(driver);
    Connection conn = DriverManager.getConnection(url, username, password);
            System.out.println("Konekkk");

        } catch (Exception e) {
            System.out.println("gagal koneksi");
        }
    }
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        jButton1 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jButton1.setText("jButton1");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(105, 105, 105)
                .addComponent(jButton1)
                .addContainerGap(222, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(88, 88, 88)
                .addComponent(jButton1)
                .addContainerGap(189, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
 try {
            // query untuk membaca SMS yang belum diproses
    String sql = "SELECT * FROM inbox WHERE Processed ='false'";
     pstmt = con.prepareStatement(sql); // create a statement
   res=pstmt.executeQuery();
    while (res.next())
    {
      // membaca ID SMS
    String id2 = res.getString("ID");
      // membaca no pengirim
      String noPengirim = res.getString("SenderNumber");
      // membaca pesan SMS dan mengubahnya menjadi kapital
      String msg = res.getString("TextDecoded");
      // proses parsing
      // memecah pesan berdasarkan karakter <spasi>
      String []pecah = msg.split(" ");
      // jika kata terdepan dari SMS adalah 'saldo' maka cari saldo
      if ("saldo".equals(pecah[0]))
      {
         // baca idmasjid dari pesan SMS
         String idmasjid = pecah[1];
         // cari saldo  berdasar idmasjid
         String query2 = "SELECT saldo FROM saldomasjid WHERE idmasjid ='"+idmasjid+"'";
         PreparedStatement hasil2=con.prepareStatement(query2);
         hasil2.executeUpdate();
         // cek bila data saldo tidak ditemukan
         if (hasil2==null) {
             String reply = "id masjid tidak ditemukan";
         }else{
          res=pstmt.executeQuery(query2);
           String saldo = res.getString("saldo");
            String reply = "saldo Masjid Anda: "+saldo+"";
         }
      }
      else {
          String reply = "Maaf perintah salah, Cek FORMAT SMS ANDA : SALDO<spasi>ID MASJID";

      // membuat SMS balasan

      String query3 = "INSERT INTO outbox(DestinationNumber, TextDecoded,CreatorID) VALUES ('"+noPengirim+"', '"+reply+"','Gammu')";
     PreparedStatement hasil3=con.prepareStatement(query3);
     hasil3.executeUpdate();
      // ubah saldo 'processed' menjadi 'true' untuk setiap SMS yang telah diproses

      String query4 = "UPDATE inbox SET Processed ='true' WHERE ID='"+id2+"'";
      PreparedStatement hasil4=con.prepareStatement(query4);
      hasil4.executeUpdate();
    }

    }
      System.out.println("suksess");
        } catch (SQLException e) {
          System.out.println(e);
        }
}

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(NewJFrame2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {

            public void run() {
                try {
                    new NewJFrame2().setVisible(true);
                } catch (ClassNotFoundException ex) {
                    Logger.getLogger(NewJFrame2.class.getName()).log(Level.SEVERE, null, ex);
                } catch (SQLException ex) {
                    Logger.getLogger(NewJFrame2.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JButton jButton1;
    // End of variables declaration
}