Java

Javaケース5在庫管理システム（収集方法を使用してこの機能を実装）



Java Case 5 Inventory Management System



/* There are 3 operations (view, modify, exit) that the administrator can perform. We can do it by means of a switch menu. -------------Inventory Management------------ 1. View inventory list 2. Modify the quantity of goods in stock 3. Exit Please enter the number of the operation to be performed: For each functional operation, we encapsulate the method so that the program is more readable. Select 1. View Inventory List function, the console prints the inventory list Select 2. Modify the item stock quantity function to update the inventory quantity of each item Select 3. Exit the function, exit the inventory management, the program ends Use collections to access product information */ import java.util.ArrayList import java.util.Scanner public class Shop{ public static void main(String[] args){ / / Define the collection, store the type variable of Laptop ArrayList array = new ArrayList() add(array) while(true){ int choose = chooseFunction() switch(choose){ / / View inventory list case 1: printArrayList(array) break case 2: changeCount(array) break case 3: return default: System.out.println('Sorry, this feature is not available for the time being') break } } } /* Modify the quantity of goods in stock */ public static void changeCount(ArrayList array){ for(int i = 0i

importによって参照されるクラスを追加すると、見つからないコンパイルエラーを回避できることに注意してください。

ラップトップと呼ばれるクラスを定義する



/* Create a class: computer Included attributes: Brand Size Price Stock */ public class Laptop{ String brand//brand Double size//size Double price//price Int count//inventory count }

結果は次のとおりです。