diff --git a/src/Main.java b/src/Main.java
index 6fbf5bf..f4b0199 100644
--- a/src/Main.java
+++ b/src/Main.java
@@ -1,19 +1,32 @@
+import java.io.InputStream;
 import java.util.Scanner;
 
 public class Main {
     public static void main(String[] args) {
-        Scanner s = new Scanner(System.in);
-        System.out.print("Benutzername: ");
-        String login = s.next();
-        System.out.print("Passwort: ");
-        String passwort = s.next();
-        s.close();
+       if(login(System.in)) {
+           System.out.println("Hello World");
+       }
+    }
 
-        Credentials cred = new Credentials(login, passwort);
-        if (cred.valid()) {
-            System.out.print("Hello World");
-            System.exit(0);
+    public static boolean login(InputStream in) {
+        Scanner s = new Scanner(in);
+
+
+        for (int i = 0; i < 3; i++) {
+            System.out.print("Benutzername: ");
+            String login = s.next();
+            System.out.print("Passwort: ");
+            String passwort = s.next();
+
+            Credentials cred = new Credentials(login, passwort);
+
+            if (cred.valid()) {
+                return true;
+            }
+
+            System.out.println("Du kommst hier nicht rein");
         }
-        System.out.print("Du kommst hier nicht rein");
+        s.close();
+        return false;
     }
 }
\ No newline at end of file