定义一个商品类，商品有价格和名称属性，使用ArrayList集合，对其添加3个商品对象，并使用Iterator遍历输出集合中商品

好的，以下是Java的代码实现：

import java.util.ArrayList;
import java.util.Iterator;

public class Product {
    private String name;
    private double price;

    public Product(String name, double price) {
        this.name = name;
        this.price = price;
    }

    public String getName() {
        return name;
    }

    public double getPrice() {
        return price;
    }

    public static void main(String[] args) {
        ArrayList<Product> productList = new ArrayList<>();
        productList.add(new Product("Apple", 3.99));
        productList.add(new Product("Banana", 2.99));
        productList.add(new Product("Orange", 4.99));

        Iterator<Product> iterator = productList.iterator();
        while (iterator.hasNext()) {
            Product product = iterator.next();
            System.out.println("Product name: " + product.getName() + ", price: " + product.getPrice());
        }
    }
}

运行该程序可以得到以下输出结果：

Product name: Apple, price: 3.99
Product name: Banana, price: 2.99
Product name: Orange, price: 4.99