Java 창고관리 시스템의 구매관리 및 구매주문 기능

public class Supplier {
    private String supplierId;
    private String supplierName;
    //...

    //getter and setter methods
}

public class SupplierManager {
    private List<Supplier> supplierList;

    public void addSupplier(Supplier supplier) {
        //将供应商信息保存到数据库或者其他存储介质中
    }

    public void updateSupplier(Supplier supplier) {
        //更新供应商信息
    }

    public void deleteSupplier(String supplierId) {
        //删除指定供应商信息
    }

    public Supplier getSupplier(String supplierId) {
        //根据供应商ID获取供应商信息
    }

    public List<Supplier> searchSuppliers(String keyword) {
        //根据关键词搜索供应商信息
    }
}

public class PurchaseOrder {
    private String orderId;
    private String supplierId;
    private Date orderDate;
    //...

    //getter and setter methods
}

public class PurchaseOrderManager {
    private List<PurchaseOrder> purchaseOrderList;

    public void createPurchaseOrder(String supplierId, Date orderDate) {
        //生成采购订单
    }

    public void updatePurchaseOrder(String orderId, PurchaseOrder newOrder) {
        //更新采购订单信息
    }

    public void deletePurchaseOrder(String orderId) {
        //删除指定采购订单
    }

    public PurchaseOrder getPurchaseOrder(String orderId) {
        //根据订单ID获取采购订单信息
    }

    public List<PurchaseOrder> searchPurchaseOrders(String keyword) {
        //根据关键词搜索采购订单信息
    }
}