Unable to update database record in MySQL

Question

I am unable to update a specific record in my database. I am unable to find the error and Eclipse doesn't show any exception error.

Thanks in advance!

Here is my main method

public void actionPerformed(ActionEvent arg0) {
        int id = PaymentRecord.id;
        int transID = Integer.parseInt(TransactionTxt.getText());
        double totalPay = Double.parseDouble(lblTotalPay.getText());
        double medAmt = Double.parseDouble(MedicineAmountTxt.getText());
            PaymentEntity e1 = new PaymentEntity(id, NameTxt.getText(), transID, DateTxt.getText(), PaymentTxt.getText(), medAmt, MedAdmnTxt.getText(), RoomTxt.getText(),ServicesTxt.getText(),totalPay);
            if (PaymentDA.updatePayment(e1)) {
                JOptionPane.showMessageDialog(HMSFrame,"Record created successfully", "Alert",JOptionPane.INFORMATION_MESSAGE);
                NameTxt.setText("");
                TransactionTxt.setText("");
                DateTxt.setText("");
                PaymentTxt.setText("");
                ConsultationAmountTxt.setText("");
                ConsultationSubsidyTxt.setText("");
                MedicineAmountTxt.setText("");
                MedicineSubsidyTxt.setText("");
                RoomAmountTxt.setText("");
                RoomSubsidyTxt.setText("");
                ServicesAmountTxt.setText("");
                ServicesSubsidyTxt.setText("");
                lblTotalPay.setText("");
                MedAdmnTxt.setText("");
                lblMedAmtTxt.setText("");
                ServicesTxt.setText("");
                RoomTxt.setText("");

            } else
                JOptionPane.showMessageDialog(HMSFrame,"Sorry. Record not updated.", "Alert",JOptionPane.ERROR_MESSAGE);
            }

    });

Here is my Data Access method

public static boolean updatePayment(PaymentEntity payment) {
    boolean success = false;
    DBController db = new DBController();
    String dbQuery; 
    PreparedStatement pstmt;

    db.getConnection();     

    dbQuery = "UPDATE payment.paymentdetail SET name = ?, transactionID = ?, dateOfTransaction = ?, paymentMethod = ?, medicineAmount = ?, medicineAdministered = ?, roomType = ?, servicesOffered = ?, amountDue = ? WHERE id = ?";
    pstmt = db.getPreparedStatement(dbQuery);

    try {
        pstmt.setString(1, payment.getName());
        pstmt.setInt(2, payment.getTransactionID());
        pstmt.setString(3, payment.getDateOfTransaction());
        pstmt.setString(4, payment.getPaymentMethod());
        pstmt.setDouble(5, payment.getMedicineAmount());
        pstmt.setString(6, payment.getMedicineAdministered());
        pstmt.setString(7, payment.getroomType());
        pstmt.setString(8, payment.getServicesOffered());
        pstmt.setDouble(9, payment.getAmountDue());
        pstmt.setInt(10, payment.getid());
        if (pstmt.executeUpdate() == 1)
            success = true;
        pstmt.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    System.out.println(success);
    db.terminate();

    return success;     
}

And here is my Entity

public class PaymentEntity {

int id;
String name;
int transactionID;
String dateOfTransaction;
String paymentMethod;
double amountDue;
double medicineAmount;
String medicineAdministered;
String roomType;
String servicesOffered;

public PaymentEntity(int id, String name,int transactionID, String dateOfTransaction, String paymentMethod, double amountDue,
        String roomType, String medicineAdministered, String servicesOffered, double medicineAmount) {
    super();
    this.id = id;
    this.name = name;
    this.transactionID = transactionID;
    this.dateOfTransaction = dateOfTransaction;
    this.paymentMethod = paymentMethod;
    this.amountDue = amountDue;
    this.medicineAmount = medicineAmount;
    this.roomType = roomType;
    this.servicesOffered = servicesOffered;
    this.medicineAdministered = medicineAdministered;
}

public int getid() {
    return id;
}
public void setid(int id) {
    this.id = id;
}
public String getName() {
    return name;
}
public void setName(String name) {
    this.name = name;
}
public int getTransactionID() {
    return transactionID;
}
public void setTransactionID(int transactionID) {
    this.transactionID = transactionID;
}
public String getDateOfTransaction() {
    return dateOfTransaction;
}
public void setDateOfTransaction(String dateOfTransaction) {
    this.dateOfTransaction = dateOfTransaction;
}
public String getPaymentMethod() {
    return paymentMethod;
}
public void setPaymentMethod(String paymentMethod) {
    this.paymentMethod = paymentMethod;
}
public double getAmountDue() {
    return amountDue;
}
public void setAmountDue(double amountDue) {
    this.amountDue = amountDue;
}
public double getMedicineAmount() {
    return medicineAmount;
}
public void setMedicineAmount(double medicineAmount) {
    this.medicineAmount = medicineAmount;
}
public String getroomType() {
    return roomType;
}
public void setroomType(String roomType) {
    this.roomType = roomType;
}
public String getServicesOffered() {
    return servicesOffered;
}
public void setServicesOffered(String servicesOffered) {
    this.servicesOffered = servicesOffered;
}
public String getMedicineAdministered() {
    return medicineAdministered;
}
public void setMedicineAdministered(String medicineAdministered) {
    this.medicineAdministered = medicineAdministered;
}

}

This is my getPreparedStatement in my DBController class

public PreparedStatement getPreparedStatement(String dbQuery) {
    PreparedStatement pstmt = null;
    System.out.println("DB prepare statement: " + dbQuery);
    try {
        // create a statement object
        pstmt = con.prepareStatement(dbQuery);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return pstmt;
}   

Here is my getConnection

public void getConnection(){ 
    String url = ""; 
    try { 
        url = "jdbc:mysql://127.0.0.1/patient"; 
        con = DriverManager.getConnection(url, "root", "IT1639"); 
        System.out.println("Successfully connected to " + url+ "."); 
    } 
    catch (java.sql.SQLException e) { 
        System.out.println("Connection failed! ->"+ url); 
        System.out.println(e); 
    } 
}

The strange thing is that I am able to Create and Delete records but not update

Answer 1

What is the result of the method "PaymentDA.updatePayment(e1)", true or false? If true then the dialog "updated" will show else the "not updated" will pop-up.

1) Try storing the result of

PaymentDA.updatePayment(e1)

to a boolean identifier then output it using:

System.out.println(blnResult);

2) Another diagnostic method that you may use is printing the output of affected records by storing in a integer identifier the method:

pstmt.executeUpdate()

to this statement:

int intRowsAffected=pstmt.executeUpdate();
System.out.println(intRowsAffected);

The output must be only 1, not 0, 2 or more.

3) Third diagnostic that you may try is printing the:

payment.getId()

to assure that the output corresponds or exists to a record in the database

Answer 2

just use simple way

    try{

          PreparedStatement stmt = obj.conn.prepareStatement("update query here");
           stmt.executeUpdate();
           JOptionPane.showMessageDialog(HMSFrame,"Record created successfully", "Alert",JOptionPane.INFORMATION_MESSAGE);

    }
    catch(SQLException e){
            JOptionPane.showMessageDialog(HMSFrame,e.getMessage(), "Alert",JOptionPane.ERROR_MESSAGE);

    }

Answer 3

Just one more ideas what you could check:

Is the id field really unique in your db-schema? Otherwise

 if (pstmt.executeUpdate() == 1)
        success = true;

may be misleading if more than one record is updated. But I suppose you had a look at the database table and checked if there has been any update!?