update,

_resources/it114105/itp4507/Assignment/19-20/src/Assignment.java

@@ -0,0 +1,61 @@
+
+import java.util.ArrayList;
+import java.util.Scanner;
+
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+/**
+ *
+ * @author jerrykwok
+ */
+public class Assignment {
+    private static Scanner input;
+    private static ArrayList<CoffeeProduct> productList;
+    private static StateManager stateMang;
+    private static CommandHandler ch;
+
+    public static void main(String[] args) {
+        input = new Scanner(System.in);
+        productList = createList();
+        stateMang = createStateManager();
+        ch = createCommand();
+        run();
+    }
+
+    public static void run(){
+      while (true) {
+          System.out.println("Coffee Inventory Management System");
+          ch.printCommandList();
+          String cmd = input.nextLine();
+          boolean result = ch.run(cmd);
+          if (!result) {
+              System.out.println("No Command Match");
+          }
+          System.out.println("");
+      }
+    }
+
+    public static CommandHandler createCommand() {
+        CommandHandler ch = new CommandHandler(stateMang);
+        ch.regCommand("a", new AddProductCommandFactory(input, productList));
+        ch.regCommand("v", new ViewProductCommandFactory(input, productList));
+        ch.regCommand("c", new CollectProductCommandFactory(input, productList, stateMang));
+        ch.regCommand("s", new SendCoffeeProductCommandFactory(input, productList, stateMang));
+        ch.regCommand("u", new UndoLastCommandFactory(stateMang));
+        ch.regCommand("r", new RedoLastCommandFactory(stateMang));
+        ch.regCommand("sl", new ViewUndoRedoListCommandFactory(stateMang));
+        ch.regCommand("x", new ExitCommandFactory());
+        return ch;
+    }
+
+    public static StateManager createStateManager() {
+        return new StateManager();
+    }
+
+    private static ArrayList<CoffeeProduct> createList(){
+      return new ArrayList<CoffeeProduct>();
+    }
+}