public void Update(Item item) {
int i, sta = 0;
for (i = 0; i < list.size(); i++)
if (list.get(i).getNumber() == item.getNumber()) {
sta = 1;
break;
}
if (sta == 0) System.out.println("仓库中没有此编号商品");
else {
list.get(i).setStock(item.getStock());
System.out.println("已更新仓库");
}
}
public void Add(Item item) {
int sta = 0;
for (int i = 0; i < list.size(); i++)
if (list.get(i).getNumber() == item.getNumber()) {
sta = 1;
break;
}
if (sta == 1)
// 如果已经存在，打印通知
System.out.println("仓库中已有该商品，请用Update更新");
else {
// 如果没有，直接加入
list.add(item);
System.out.println("已添加到仓库中");
}
}
// 读写的方法
public void Save() {
try {
file.delete();
FileWriter writer = new FileWriter(file);
for (Item i : list)
writer.write(
i.getNumber()
+ ";"
+ i.getCategory()
+ ";"
+ i.getName()
+ ";"
+ i.getModel()
+ ";"
+ i.getStock()
+ "\n");
writer.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public void show() {
Collections.sort(
list,
new Comparator<Item>() {
public int compare(Item i1, Item i2) {
if (i1.getNumber() > i2.getNumber()) return 1;
else return -1;
}
});
for (Item i : list)
System.out.println(
i.getNumber()
+ ";"
+ i.getCategory()
+ ";"
+ i.getName()
+ ";"
+ i.getModel()
+ ";"
+ i.getStock());
}