/**

* 增加商品的 * @param goods * @return */

public {

goodsList.add(goods); return "添加成功"; } /** * 删除商品 */

public String delete(String name) {String flag = null; } else {

for (int i = 0; i < goodsList.size(); i++) {

Goods goods = goodsList.get(i); if (goods.getName().equals(name)) {

goodsList.remove(i);

flag = "删除商品["+name+"]成功"; break; } } }

return flag; } /** * 销售

* @param goods * @return */

public String sale(Goods goods) {

String flag = "销售商品["+goods.getName()+"]失败";

if(name == null){

flag = "删除商品["+name+"]不存在 ";