What will be the output of this Java code?

What will be the output of this Java code?

class Product {
  String name;
  double price;
  void display() {
    System.out.println(name + ": $" + price);
  }
}
public class Shop {
  public static void main(String[] args) {
    Product p = new Product();
    p.name = "Pen";
    p.price = 1.5;
    p.display();
  }
}