Iterator<Map.Entry<Character,Integer>>it = map.entrySet().iterator();说这个Multiple markers at this line        - The type HTMLDocument.Iterator is not generic; it cannot be parameterized with arguments
         <Map.Entry<Character,Integer>>

Iterator<Map.Entry<Character,Integer>>it = map.entrySet().iterator();说这个Multiple markers at this line        - The type HTMLDocument.Iterator is not generic; it cannot be parameterized with arguments
         <Map.Entry<Character,Integer>>