Java + HTML, How to display list?

I am using Netbeans to display a simple list,
it is working with "list of string",
but cannot success with "list of 'customer'"
I want to display the name, age of the customer
Here is my code:

public class Customer {
            private String name;
            public void setName(String name) { this.name = name; }
            public String getName(){ return name;}
            public Customer(String name){
                this.name = name;
            }
        }

Customers object

public final SimpleListProperty<Customer> Customers = new SimpleListProperty<>(this, "Customers", FXCollections.observableArrayList());

Add a customer

Customer customer = new Customer('test');
Customers.getValue().add(customer);

Interface

<div class="row">
     <ul class="col s12 collection" data-bind="foreach: Customers">
          <li class="collection-item">
               <span data-bind="text: $data.name"></span>
          </li>
     </ul>
</div>

I tried all the following

<span data-bind="text: $data"></span>

<span data-bind="text: $data.name"></span>

<span data-bind="text: $name"></span>

Nothing work, only empty list appears. But when I changed the list to (list of simple string) it works fine.

I also tried "private String name;" and "public String name;"

Any help, please