使用Java开发仓库管理系统的动态出库和缺货处理功能

CREATE TABLE items (
  id INT PRIMARY KEY,
  name VARCHAR(100),
  quantity INT
);

public class Item {
  private int id;
  private String name;
  private int quantity;

  // 构造方法
  public Item(int id, String name, int quantity) {
    this.id = id;
    this.name = name;
    this.quantity = quantity;
  }

  // getter和setter方法
  public int getId() {
    return id;
  }

  public void setId(int id) {
    this.id = id;
  }

  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }

  public int getQuantity() {
    return quantity;
  }

  public void setQuantity(int quantity) {
    this.quantity = quantity;
  }
}

import java.util.ArrayList;
import java.util.List;

public class InventoryManager {
  private List<Item> items;

  // 构造方法
  public InventoryManager() {
    this.items = new ArrayList<>();
  }

  // 添加物品
  public void addItem(Item item) {
    items.add(item);
  }

  // 出库
  public boolean sellItem(int id, int quantity) {
    for (Item item : items) {
      if (item.getId() == id) {
        if (item.getQuantity() >= quantity) {
          item.setQuantity(item.getQuantity() - quantity);
          return true;
        } else {
          return false;
        }
      }
    }
    return false;
  }

  // 检查物品库存
  public boolean checkStock(int id) {
    for (Item item : items) {
      if (item.getId() == id) {
        if (item.getQuantity() > 0) {
          return true;
        } else {
          return false;
        }
      }
    }
    return false;
  }
}

public class Main {
  public static void main(String[] args) {
    InventoryManager inventoryManager = new InventoryManager();

    // 添加物品
    Item item1 = new Item(1, "物品1", 10);
    Item item2 = new Item(2, "物品2", 5);
    inventoryManager.addItem(item1);
    inventoryManager.addItem(item2);

    // 出库
    int itemId = 1;
    int sellQuantity = 5;
    if (inventoryManager.sellItem(itemId, sellQuantity)) {
      System.out.println("成功出库" + sellQuantity + "个物品" + itemId);
    } else {
      System.out.println("出库失败，库存不足");
    }

    // 检查库存
    int checkItemId = 1;
    if (inventoryManager.checkStock(checkItemId)) {
      System.out.println("物品" + checkItemId + "有库存");
    } else {
      System.out.println("物品" + checkItemId + "无库存");
    }
  }
}

成功出库5个物品1
物品1有库存