Technikladen/OrderSystem.java

@@ -3,9 +3,9 @@ import java.util.ArrayList;
 public class OrderSystem {
 	private StorageManager systemManager;
 	private ArrayList<Client> systemClients;
-	public OrderSystem(StorageManager manager, ArrayList<Client> clients) {
+	public OrderSystem(StorageManager manager) {
 		this.systemManager = manager;
-		this.systemClients = clients;
+		this.systemClients = new ArrayList<Client>();
 	}
 	public void addProduct(Product product) {
 		this.systemManager.addProduct(product);
@@ -52,4 +52,4 @@ public class OrderSystem {
 			System.out.println("ID: " + product.getID() + ", Name: " + product.getName() + ", Price: " + product.getPrice() + ", Amount: " + product.getAmount());
 		}
 	}
-}
+}

Technikladen/StorageManager.java

@@ -2,8 +2,8 @@ import java.util.ArrayList;
 
 public class StorageManager {
 	private ArrayList<Product> storageProducts;
-	public StorageManager(ArrayList<Product> products) {
-		this.storageProducts = products;
+	public StorageManager() {
+		this.storageProducts = new ArrayList<Product>();
 	}
 	public void addProduct(Product product) {
 		this.storageProducts.add(product);

Technikladen/TechStore.java

@@ -6,8 +6,8 @@ public class TechStore {
 		System.out.print(input);
 	}
 	public static void main(String[] args) {
-		StorageManager manager = new StorageManager(new ArrayList<Product>());
-		OrderSystem system = new OrderSystem(manager, new ArrayList<Client>());
+		StorageManager manager = new StorageManager();
+		OrderSystem system = new OrderSystem(manager);
 		Scanner scnr = new Scanner(System.in);
 		while (true) {
 			p("\nInput mode: ");