Java class that represents a Order with immutable properties

Order.java

public class Order {

    public final UUID id;
    public final ZonedDateTime createdAt;
    public final String customerName;
    public final List<String> items;
    public final Integer totalAmount;

    public Order(UUID id, ZonedDateTime createdAt, String customerName, List<String> items, Integer totalAmount) {
        this.id = id;
        this.createdAt = createdAt;
        this.customerName = customerName;
        this.items = List.copyOf(items);
        this.totalAmount = totalAmount;
    }
}