static <T> T getValue(T id){
        return id;
    }



무한이프문 

무한포문싸개


 Consumer<List<Integer>> test = str->str.forEach(test2->System.out.println(test2*(list.indexOf(test2)+1)));


Consumer<Map<String,List<String>>> sortUtil = map -> map.values().forEach(list->list.sort(String :: compareTo));