How would I implement a linkedList using the EntryIterator and iterator method used in the following classes in a HashTable Main Class?

public String[] getKeys() {        String[] keys = new String[size];      

 int index = 0;      

 for (MyLinkedList list : table) {            if (list != null) {             

   MyLinkedList.EntryIterator iterator = list.iterator();               

 while (iterator.hasNext()) {                    Entry entry = (Entry) iterator.next();      

keys[index] = entry.key;           

         index++;  

            }     

       }     

   }    

   return keys;