java .lang. arrayindexoutofbound...

private void submitActionPerformed(java.awt.event.ActionEvent evt) {                                       
   try{
      Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
      conn = DriverManager.getConnection("jdbc:odbc:BankSystem");
      select = "Select * From SingaporeWithdraw where AccountNo = ?;";
      update = "Update SingaporeWithdraw Set Balance = ? where AccountNo = ?";
      stmtSelect = conn.createStatement();
      stmtUpdate = conn.createStatement();
      pstmtSelect = conn.prepareStatement(select);
      pstmtUpdate = conn.prepareStatement(update);

      //get value from textField and pass it into prepareStatement
      String accNo = accNumber.getText();
      //this is to set the accNo into ?
      pstmtSelect.setString(1, accNo);
      rsSelect = pstmtSelect.executeQuery();

      String branch = null;
      while(rsSelect.next()){
         //custNameText.setText(rsSelect.getString("CustName"));
         // jlblbalance.setText(rsSelect.getString("Balance"));
         branch = rsSelect.getString("Branch");
      }
      if(branch.equalsIgnoreCase("Singapore")){
         double balance = Double.parseDouble(jlblbalance.getText());
         double result = withdraw(balance);
         //newResult is the latest balance
         String newResult = String.valueOf(result);
         jlblbalance.setText(newResult);
         long ref = (long)(Math.random()*10000000);
         jlblRef.setText(String.valueOf(ref));

         pstmtUpdate.setString(4, newResult);
         rsUpdate = pstmtUpdate.executeQuery();
      }
      else{
         JOptionPane.showMessageDialog(null, "Sorry the customer details is not in this branch. The information shall be forwsrded to related branch.");
         String allInfo = accNumber.getText()+","+amountText.getText()+","+branchCombo.getSelectedItem().toString();

         //from malaysia
         byte [] dataReceived = new byte[65536];
         //to thailand
         byte [] sendData = new byte[65536];

         //from malaysia
         DatagramPacket packetReceived = new DatagramPacket(dataReceived, dataReceived.length);
         //to thailand
         DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length);

         //for data from malaysia use
         DatagramSocket myMalServer = new DatagramSocket(100);
                
         //for data to thailand use
         DatagramSocket myThaiServer = new DatagramSocket(200);

         //receive "On" from malaysia
         myMalServer.receive(packetReceived);
         String onMsg = new String (packetReceived.getData(),0,packetReceived.getLength());
         System.out.println(onMsg);
                
         //receive codes here from malaysia
         myMalServer.receive(packetReceived);
         String serverMsg = new String(packetReceived.getData(), 0, packetReceived.getLength());
         String [] text = serverMsg.split(",");
         //continue to split the message here
         accNumber.setText(text[0]);
         amountText.setText(text[1]);
         jlblbranch.setText(text[2]);
                
         //process all the info if its for singapore
         String correctBranch = jlblbranch.getText();
         if(correctBranch.equalsIgnoreCase("Singapore")){
            rsSelect = pstmtSelect.executeQuery();
            double balance = Double.parseDouble(jlblbalance.getText());
            double result = withdraw(balance);
            String newResult = String.valueOf(result);
            jlblbalance.setText(newResult);
            double ref = (double)(Math.random()*10000);
            jlblRef.setText(String.valueOf(ref));
            rsUpdate = pstmtUpdate.executeQuery();
         }
         else{
            //to establish connection with thailand
            InetAddress destAddress = InetAddress.getByName("localhost");
            String SingaporeMsg = "On";
            sendData = SingaporeMsg.getBytes();
            sendPacket.setData(sendData);
            sendPacket.setAddress(destAddress);
            sendPacket.setPort(100);
            myThaiServer.send(sendPacket);

            //after establishing connection, send all related information to thailand
            sendData = allInfo.getBytes();
            sendPacket.setData(sendData);
            sendPacket.setAddress(packetReceived.getAddress());
            sendPacket.setPort(packetReceived.getPort());
            myThaiServer.send(sendPacket);
         }

         myMalServer.close();
         myThaiServer.close();
      }
   }
   catch(Exception ex){
   JOptionPane.showMessageDialog(null, ex);
   }
}