diff --git a/src/main/java/de/joethei/hs/java2/praktikum/praktikum2/CharCollection.java b/src/main/java/de/joethei/hs/java2/praktikum/praktikum2/CharCollection.java
index d770d4f..dcc4a5f 100644
--- a/src/main/java/de/joethei/hs/java2/praktikum/praktikum2/CharCollection.java
+++ b/src/main/java/de/joethei/hs/java2/praktikum/praktikum2/CharCollection.java
@@ -1,22 +1,19 @@
 package de.joethei.hs.java2.praktikum.praktikum2;
 
-import com.sun.istack.internal.NotNull;
-
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
-import java.util.logging.Logger;
 
 public class CharCollection implements Cloneable{
 
     private List<Character> list = new ArrayList<>();
 
-    public CharCollection(@NotNull char... cc) {
+    public CharCollection(char... cc) {
         for(char c:cc) this.list.add(c);
     }
 
-    public CharCollection(@NotNull String s) {
+    public CharCollection(String s) {
         for(char c : s.toCharArray()) {
             this.list.add(c);
         }