Java Map 전체 출력

  
 HashMap<String, String> hashMap  = new HashMap<String, String>();
 Iterator<String> mapIter = hashMap.keySet().iterator();
 while(mapIter.hasNext()){
 
            String key = mapIter.next();
            String value = hashMap.get( key );
 
            System.out.println(key+" : "+value);
 
        }