1.不用stop()终止线程
为什么?
http://www.cnblogs.com/greta/p/5624839.html
2.守护线程相关问题
为什么?
https://blog.youkuaiyun.com/u011240877/article/details/57202704
http://www.cnblogs.com/greta/p/5624839.html
https://blog.youkuaiyun.com/u011240877/article/details/57202704