JAVA  

import java.util.Map; /**  * COMP1110 Final Exam, Question 3ii  */ public class Q3StockManager { /**  * A new vendor has been introduced.  *  * @param vid The vid of the new vendor vendor  * @param name The vendors name  */  public void newVendor(String vid, String name) { // FIXME Question 3iia: complete this function  } /**  * A new product has been introduced.  *  * @param sku The products sku  * @param vid The vid of the product's vendor  * @param name The products name  * @param price The products price (per unit)  */  public void newItem(String sku, String vid, String name, double price) { // FIXME Question 3iib: complete this function  } /**  * Return the name of a product.  *  * @param sku The products sku  * @return the name of the product  */  public String getItemName(String sku) { return null; // FIXME Question 3iic: complete this function  } /**  * Return the name of a product's vendor.  *  * @param sku The products sku  * @return the name of the product's vendor  */  public String getItemVendorName(String sku) { return null; // FIXME Question 3iid: complete this function  }; /**  * Return the price of a product.  *  * @param sku The products sku  * @return the price of the product  */  public double getItemPrice(String sku) { return -1; // FIXME Question 3iie: complete this function  }; /**  * Return the amount of stock for a product.  *  * @param sku The products sku  * @return the number of items in stock  */  public int getStock(String sku) { return -1; // FIXME Question 3iif: complete this function  }; /**  * An product has been sold; reduce current stock accordingly.  *  * @param sku The products sku  * @param sold The quantity sold  * @return The number of items of stock remaining after the sale  */  public int sale(String sku, int sold) { return -1; // FIXME Question 3iig: complete this function  } /**  * New stock has arrived; increase current stock accordingly.  *  * @param sku The products sku  * @param added The quantity newly arrived  */  public void addStock(String sku, int added) { // FIXME Question 3iih: complete this function  } /**  * Set the target amount of stock for a product.  *  * @param sku The items sku  * @param target The target quantity desired to be held in stock  */  public void setTargetStock(String sku, int target) { // FIXME Question 3iij: complete this function  } /**  * Stock has been carefully counted. Set current stock correctly.  *  * @param sku The products sku  * @param actual The quantity actually in the store  * @return The stock loss or gain (new current  old current)  */  public int setActualStock(String sku, int actual) { return 0; // FIXME Question 3iik: complete this function  } /**  * For a given vendor, return a map indicating for each product provided by  * that vendor, the number of items required in order to reach the target  * stock for that item (target - stock). A positive number indicates that  * stock is needed, a negative number indicates that there is extra stock.  *  * @param vid The VID of the vendor to be queried  * @return A map of item SKUs and the difference between target and actual stock for that item  */  public Map getStockRequired(String vid) { return null; // FIXME Question 3iil: complete this function  } }