Timer (Java EE 5 SDK)

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Java EE 5 SDK

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详细信息: 字段 | 构造器 | 方法

javax.ejb Interface Timer

public interface Timer

The Timer interface contains information about a timer that was created through the EJB Timer Service.

方法摘要
`void`	`cancel()` Cause the timer and all its associated expiration notifications to be cancelled.
`TimerHandle`	`getHandle()` Get a serializable handle to the timer.
`Serializable`	`getInfo()` Get the information associated with the timer at the time of creation.
`Date`	`getNextTimeout()` Get the point in time at which the next timer expiration is scheduled to occur.
`long`	`getTimeRemaining()` Get the number of milliseconds that will elapse before the next scheduled timer expiration.

方法详细信息

cancel

void cancel()
            throws IllegalStateException,
                   NoSuchObjectLocalException,
                   EJBException

Cause the timer and all its associated expiration notifications to be cancelled.

抛出异常:: IllegalStateException - If this method is invoked while the instance is in a state that does not allow access to this method.; NoSuchObjectLocalException - If invoked on a timer that has expired or has been cancelled.; EJBException - If this method could not complete due to a system-level failure.

getTimeRemaining

long getTimeRemaining()
                      throws IllegalStateException,
                             NoSuchObjectLocalException,
                             EJBException

Get the number of milliseconds that will elapse before the next scheduled timer expiration.

返回:: the number of milliseconds that will elapse before the next scheduled timer expiration.
抛出异常:: IllegalStateException - If this method is invoked while the instance is in a state that does not allow access to this method.; NoSuchObjectLocalException - If invoked on a timer that has expired or has been cancelled.; EJBException - If this method could not complete due to a system-level failure.

getNextTimeout

Date getNextTimeout()
                    throws IllegalStateException,
                           NoSuchObjectLocalException,
                           EJBException

Get the point in time at which the next timer expiration is scheduled to occur.

返回:: the point in time at which the next timer expiration is scheduled to occur.
抛出异常:: IllegalStateException - If this method is invoked while the instance is in a state that does not allow access to this method.; NoSuchObjectLocalException - If invoked on a timer that has expired or has been cancelled.; EJBException - If this method could not complete due to a system-level failure.

getInfo

Serializable getInfo()
                     throws IllegalStateException,
                            NoSuchObjectLocalException,
                            EJBException

Get the information associated with the timer at the time of creation.

返回:: The Serializable object that was passed in at timer creation, or null if the info argument passed in at timer creation was null.
抛出异常:: IllegalStateException - If this method is invoked while the instance is in a state that does not allow access to this method.; NoSuchObjectLocalException - If invoked on a timer that has expired or has been cancelled.; EJBException - If this method could not complete due to a system-level failure.

getHandle

TimerHandle getHandle()
                      throws IllegalStateException,
                             NoSuchObjectLocalException,
                             EJBException

Get a serializable handle to the timer. This handle can be used at a later time to re-obtain the timer reference.

返回:: a serializable handle to the timer.
抛出异常:: IllegalStateException - If this method is invoked while the instance is in a state that does not allow access to this method.; NoSuchObjectLocalException - If invoked on a timer that has expired or has been cancelled.; EJBException - If this method could not complete due to a system-level failure.

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