public class TReschedulableTimer
extends java.lang.Object
This class uses the java.util.Timer
and therefore it has
the same conditions. Except that it allows to reschedule a task.
Timer
Constructor and Description |
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TReschedulableTimer()
Creates a new timer.
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TReschedulableTimer(boolean isDaemon)
Creates a new timer whose associated thread may be specified to
run as a daemon.
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Modifier and Type | Method and Description |
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void |
reschedule(TReschedulableTask task,
java.util.Date time)
Reschedules the specified task for execution at the specified time.
|
void |
reschedule(TReschedulableTask task,
java.util.Date time,
long period)
Reschedules the specified task for repeated fixed-delay execution,
beginning after the specified delay.
|
void |
reschedule(TReschedulableTask task,
long delay)
Reschedules the specified task for execution after the specified delay.
|
void |
reschedule(TReschedulableTask task,
long delay,
long period)
Reschedules the specified task for repeated fixed-delay execution,
beginning after the specified delay.
|
void |
schedule(TReschedulableTask task,
java.util.Date time)
Schedules the specified task for execution at the specified time.
|
void |
schedule(TReschedulableTask task,
java.util.Date firstTime,
long period)
Schedules the specified task for repeated fixed-delay execution,
beginning at the specified time.
|
void |
schedule(TReschedulableTask task,
long delay)
Schedules the specified task for execution after the specified delay.
|
void |
schedule(TReschedulableTask task,
long delay,
long period)
Schedules the specified task for repeated fixed-delay execution,
beginning after the specified delay.
|
public TReschedulableTimer()
public TReschedulableTimer(boolean isDaemon)
isDaemon
- true if the associated thread should run as a daemon.public void schedule(TReschedulableTask task, long delay)
task
- task to be scheduled.delay
- delay in milliseconds before task is to be executed.java.lang.IllegalArgumentException
- if delay is negative, or
delay + System.currentTimeMillis() is negative.java.lang.IllegalStateException
- if task was already scheduled or
cancelled, or timer was cancelled.public void schedule(TReschedulableTask task, long delay, long period)
In fixed-delay execution, each execution is scheduled relative to the actual execution time of the previous execution. If an execution is delayed for any reason (such as garbage collection or other background activity), subsequent executions will be delayed as well. In the long run, the frequency of execution will generally be slightly lower than the reciprocal of the specified period (assuming the system clock underlying Object.wait(long) is accurate).
Fixed-delay execution is appropriate for recurring activities that require "smoothness." In other words, it is appropriate for activities where it is more important to keep the frequency accurate in the short run than in the long run. This includes most animation tasks, such as blinking a cursor at regular intervals. It also includes tasks wherein regular activity is performed in response to human input, such as automatically repeating a character as long as a key is held down.
task
- task to be scheduled.delay
- delay in milliseconds before task is to be executed.period
- time in milliseconds between successive task executions.java.lang.IllegalArgumentException
- if delay is negative, or
delay + System.currentTimeMillis() is negative.java.lang.IllegalStateException
- if task was already scheduled or
cancelled, timer was cancelled, or timer thread terminated.public void schedule(TReschedulableTask task, java.util.Date time)
task
- task to be scheduled.time
- time at which task is to be executed.java.lang.IllegalArgumentException
- if time.getTime() is negative.java.lang.IllegalStateException
- if task was already scheduled or
cancelled, timer was cancelled, or timer thread terminated.public void schedule(TReschedulableTask task, java.util.Date firstTime, long period)
In fixed-delay execution, each execution is scheduled relative to the actual execution time of the previous execution. If an execution is delayed for any reason (such as garbage collection or other background activity), subsequent executions will be delayed as well. In the long run, the frequency of execution will generally be slightly lower than the reciprocal of the specified period (assuming the system clock underlying Object.wait(long) is accurate).
Fixed-delay execution is appropriate for recurring activities that require "smoothness." In other words, it is appropriate for activities where it is more important to keep the frequency accurate in the short run than in the long run. This includes most animation tasks, such as blinking a cursor at regular intervals. It also includes tasks wherein regular activity is performed in response to human input, such as automatically repeating a character as long as a key is held down.
task
- task to be scheduled.firstTime
- First time at which task is to be executed.period
- time in milliseconds between successive task executions.java.lang.IllegalArgumentException
- if time.getTime() is negative.java.lang.IllegalStateException
- if task was already scheduled or
cancelled, timer was cancelled, or timer thread terminated.public void reschedule(TReschedulableTask task, long delay)
task
- task to be scheduled.delay
- delay in milliseconds before task is to be executed.java.lang.IllegalArgumentException
- if delay is negative, or
delay + System.currentTimeMillis() is negative.java.lang.IllegalStateException
- timer was cancelled.public void reschedule(TReschedulableTask task, long delay, long period)
In fixed-delay execution, each execution is scheduled relative to the actual execution time of the previous execution. If an execution is delayed for any reason (such as garbage collection or other background activity), subsequent executions will be delayed as well. In the long run, the frequency of execution will generally be slightly lower than the reciprocal of the specified period (assuming the system clock underlying Object.wait(long) is accurate).
Fixed-delay execution is appropriate for recurring activities that require "smoothness." In other words, it is appropriate for activities where it is more important to keep the frequency accurate in the short run than in the long run. This includes most animation tasks, such as blinking a cursor at regular intervals. It also includes tasks wherein regular activity is performed in response to human input, such as automatically repeating a character as long as a key is held down.
task
- task to be scheduled.delay
- delay in milliseconds before task is to be executed.period
- time in milliseconds between successive task executions.java.lang.IllegalArgumentException
- if delay is negative, or
delay + System.currentTimeMillis() is negative.java.lang.IllegalStateException
- if timer was cancelled, or timer thread terminated.public void reschedule(TReschedulableTask task, java.util.Date time)
task
- task to be scheduled.time
- time at which task is to be executed.java.lang.IllegalArgumentException
- if time.getTime() is negative.java.lang.IllegalStateException
- if timer was cancelled, or timer thread terminated.public void reschedule(TReschedulableTask task, java.util.Date time, long period)
In fixed-delay execution, each execution is scheduled relative to the actual execution time of the previous execution. If an execution is delayed for any reason (such as garbage collection or other background activity), subsequent executions will be delayed as well. In the long run, the frequency of execution will generally be slightly lower than the reciprocal of the specified period (assuming the system clock underlying Object.wait(long) is accurate).
Fixed-delay execution is appropriate for recurring activities that require "smoothness." In other words, it is appropriate for activities where it is more important to keep the frequency accurate in the short run than in the long run. This includes most animation tasks, such as blinking a cursor at regular intervals. It also includes tasks wherein regular activity is performed in response to human input, such as automatically repeating a character as long as a key is held down.
task
- task to be scheduled.delay
- delay in milliseconds before task is to be executed.period
- time in milliseconds between successive task executions.java.lang.IllegalArgumentException
- if delay is negative, or
delay + System.currentTimeMillis() is negative.java.lang.IllegalStateException
- if timer was cancelled, or timer thread terminated.Copyright (c) 2017 Software AG. All Rights Reserved.