摘要: 1. 懒汉-线程不安全 public class SingleLon{ private static SingleLon instance = null; private SingleLon(){} public static SingleLon getInstance(){ if(singleLo 阅读全文
posted @ 2020-04-28 16:46 小叶子leavescy 阅读(147) 评论(0) 推荐(0) 编辑