console-output.txt

[INFO] {"phone_number":null, "delivery":true, "delivery_address":["3434 Pinerun Ave.","Tampa, FL 33734"], "pizzas":[{"crust":"thin", "quantity":1, "size":16, "toppings":["ham","pineapple"]},{"crust":"thin", "quantity":1, "size":16, "toppings":["extra cheese"]}]}

MyEntryPoint.java

public class MyEntryPoint implements EntryPoint {
    public static class Pizza {
        public String crust;
        public int quantity;
        public int size;
        public List<String> toppings = new ArrayList<String>();
    }

    public static class PizzaOrder {
      public String phone_number;
      public boolean delivery;
      public List<String> delivery_address = new ArrayList<String>(4);
      public List<Pizza> pizzas = new ArrayList<Pizza>(10);
    }

    public interface PizzaOrderJED extends JsonEncoderDecoder<PizzaOrder> {
    }

    /**
     * This is the entry point method.
     */
    public void onModuleLoad() {
        PizzaOrder order = new PizzaOrder();
        order.delivery = true;
        order.delivery_address.add("3434 Pinerun Ave.");
        order.delivery_address.add("Tampa, FL 33734");
        Pizza pizza = new Pizza();
        pizza.crust = "thin";
        pizza.quantity = 1;
        pizza.size = 16;
        pizza.toppings.add("ham");
        pizza.toppings.add("pineapple");
        order.pizzas.add(pizza);
        pizza = new Pizza();
        pizza.crust = "thin";
        pizza.quantity = 1;
        pizza.size = 16;
        pizza.toppings.add("extra cheese");
        order.pizzas.add(pizza);

        PizzaOrderJED jed = GWT.create(PizzaOrderJED.class);

        System.out.println(jed.encode(order).toString());
   }
}