public void createCustomer() {
    try {
        // Create Document
        CustomersDocument doc = CustomersDocument.Factory.newInstance();
        // Add new customer
        CustomerType customer = doc.addNewCustomers().addNewCustomer();
        // set customer info
        customer.setId(3);
        customer.setFirstname("Jessica");
        customer.setLastname("Lim");
        customer.setGender("female");
        customer.setPhoneNumber("1234567");
        // Add new address
        AddressType address = customer.addNewAddress();
        // Add new PrimaryAddress
        PrimaryAddressType primaryAddress = address.addNewPrimaryAddress();
        primaryAddress.setPostalCode("350106");
        primaryAddress.setAddressLine1("#25-1");
        primaryAddress.setAddressLine2("SHINSAYAMA 2-CHOME");

        // Add new BillingAddress
        BillingAddressType billingAddress = address.addNewBillingAddress();
        billingAddress.setReceiver("Ms Danielle");
        billingAddress.setPostalCode("350107");
        billingAddress.setAddressLine1("#167");
        billingAddress.setAddressLine2("NORTH TOWER HARBOUR CITY");

        File xmlFile = new File(filename);
        doc.save(xmlFile);
        } catch (Exception ex) {
                ex.printStackTrace();
        }

  }

    public static void main(String[] args) {
    String filename = "F://JavaTest//Eclipse//XMLBean//xml//customers_new.xml";
        CustomerXMLBean customerXMLBean = new CustomerXMLBean(filename);
        customerXMLBean.createCustomer();
    }