使用Java语言编写一个模拟网上超市购物结算功能的程序，要求程序运行后有一个图形用户界面，可供用户输入购买的各种商品相关信息，最后给出用户的购物清单及价格，并且用户可以根据需要查询自己购买的第几项商品的详细信息。-Using the Java language to write a simulation supermarket shopping online billing program, the program requires to run a graphical user interface for the user to enter information about various goods to buy. Finally, the user' s shopping list and prices, and the user can need more information first few buy their own goods.