public final class TimeoutCountDown
extends Object
implements Comparable<TimeoutCountDown>

所有方法静态方法实例方法具体方法
修饰符和类型	方法	说明
`int`	`compareTo(TimeoutCountDown another)`
`long`	`elapsedMillis()`
`long`	`getTimeoutInMilli()`
`boolean`	`isExpired()`
`static TimeoutCountDown`	`newCountDown(long timeout, TimeUnit unit)`
`long`	`timeRemaining(TimeUnit unit)`
`String`	`toString()`

public static TimeoutCountDown newCountDown(long timeout,
                                            TimeUnit unit)

public long timeRemaining(TimeUnit unit)

类 TimeoutCountDown