Merge remote-tracking branch 'origin/master'

src/Credentials.java

@@ -14,16 +14,16 @@ public class Credentials {
     public boolean valid() {
 
         boolean usernameGiven = false;
-        String hashData;
+
 
         //iterator over file
         for (String line:
                 Helpers.readTextdatei("data/passwd.txt")) {
-            if(login == line) {
+            if(login.equals(line)) {
                 usernameGiven = true;
                 continue;
             }
-            if(usernameGiven && hash == line) {
+            if(usernameGiven && hash.equals(line)) {
                 return true;
             }