And instead of scheduling the task for execution after a fixed delay , the alarm clock uses a 這個鬧鐘不是計劃一個任務在固定的延遲時間后執(zhí)行,而是用
Allows tasks to be scheduled for repeated execution by specifying a fixed rate of execution or a fixed delay between executions 通過指定一個固定的執(zhí)行頻率或者固定的執(zhí)行時間間隔,