map泛型 map不指定泛型的区别

map泛型 map不指定泛型 与 Map<Object,Object>的区别 private void viewDetail(){ Map map1 = new HashMap(); Map<String,Object> map2 = new HashMap<String,Object>(); Map<Object,Object> map3 = new HashMap<Object,Obje

>>阅读原文<<