Java中Executor、ExecutorService、ThreadPoolExecutor介绍
1.Excutor源码非常简单,只有一个execute(Runnablecommand)回调接口publicinterfaceExecutor{/***Executesthegivencommandatsometimeinthefuture.Thecommand*mayexecuteinanewthread,inapooledthread,orinthecalling*thread,atthedi