请问Timer定时器的用法

请教Timer定时器的用法
我想要销毁掉能否有办法再启用？
或者说暂时停掉，需要的时候在启用。求大侠们帮帮忙

Java code

 Timer timer = new Timer("Timer-reconnect provider Timer"); TimerTask task = new TimerTask() {    @Override    public void run() {        log.info("it is time to check jtapi Provider.");        try {            checkProvider();        } catch (Exception e) {            log.info("the Network may be disconnected,please check!");            e.printStackTrace();        }    }}

在provider INSERVICE的時候关了
在provider OUTOFSERVICE的時候开启
在provider SHUTDOWN的時候关开启

我下面这样写就不行

Java code

    @Override    public void providerInService(ProviderEvent event) {        log.info("provider is InService.");                timer.cancel();    }    @Override    public void providerOutOfService(ProviderEvent event) {        log.info("provider is OutOfService,please wait for InService.");                timer.schedule(task, 3000, 10000);    }    @Override    public void providerShutdown(ProviderEvent event) {        log.info("provider is Shutdown，please wait for restart.");                timer.schedule(task, 3000, 10000);    }

[解决办法]
每次cancel task，然后重新启动的时候，重新new一个task加入schedule

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