Map<String,?String[]>?location?=?new?HashMap<>();
String[]?sh?=?new?String[]{"徐匯",?"長寧","普陀",?"閘北",?"虹口"};
location.put("上海",?sh);
for(Map.Entry<String,?String[]>?entry?:?location.entrySet())?{
????System.out.println(entry.getKey()?+?"\t"?+?Arrays.asList(entry.getValue()).toString());
}