updated to generic

uebung07/src/oop/ch05/mensa/AccountCard.java

@@ -5,15 +5,15 @@ import oop.ch05.secured.SecuredContent;
 import oop.ch05.secured.SecurityClient;
 
 public class AccountCard extends MensaCard {
-  private final SecuredContent account;
+  private final SecuredContent<String> account;
 
   public AccountCard(String key, String account, int password) {
     super(key, Color.white);
-    this.account = new SecuredContent(password, account);
+    this.account = new SecuredContent<>(password, account);
   }
 
   public String getAccount() {
-    return (String) account.getContent();
+    return account.getContent();
   }
 
   public void setAccount(SecurityClient client, String account) throws AuthorizationException {

uebung07/src/oop/ch05/mensa/CashCard.java

@@ -4,17 +4,17 @@ import oop.ch05.secured.AuthorizationException;
 import oop.ch05.secured.SecuredContent;
 
 public class CashCard extends MensaCard {
-  private final SecuredContent balance;
+  private final SecuredContent<Integer> balance;
 
   public CashCard(String key, Color color, int password) {
     super(key, color);
-    balance = new SecuredContent(password, 0);
+    balance = new SecuredContent<>(password, 0);
     if (color != Color.blue && color != Color.green)
       throw new IllegalArgumentException("Invalid CashCard color " + color);
   }
 
   public int getBalance() {
-    return (Integer) balance.getContent();
+    return balance.getContent();
   }
 
   void deposit(VendingMachine client, int cents)