摘要: 方法一: Map hashmp = ne HashMap(); hashmp.put("aa", "111"); hashmap.containsKey("xxx"); 方法二:keySet() HashMap hashmp = ne HashMap(); hashmp.put("aa", "111"); Set set = hashmp.keySet(); Iterator iter = ... 阅读全文
posted @ 2019-03-20 10:26 y-xs 阅读(66768) 评论(2) 推荐(1) 编辑