The TimerTask class has a cancel method that you can use to cancel subsequent invocations of the task.
timertask类有一个cancel方法，可以用它取消对任务的后续调用。
As the preceding section mentioned, there's an issue with the use of Timer in JCA: the thread on which the TimerTask is executed is not under the application server's control.
正如前一小节提到过的，在JCA中，使用Timer有一个问题：执行TimerTask的线程不在应用服务器的控制之下。
As the preceding section mentioned, there's an issue with the use of Timer in JCA: the thread on which the TimerTask is executed is not under the application server's control.
正如前一小节提到过的，在JCA中，使用Timer有一个问题：执行TimerTask的线程不在应用服务器的控制之下。
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