Java.util.Timer Class
Introduction
The java.util.Timer class provides facility for threads to schedule tasks for future execution in a background thread.
This class is thread-safe i.e multiple threads can share a single Timer object without the need for external synchronization.
This class schedules tasks for one-time execution, or for repeated execution at regular intervals.
All constructors start a timer thread.
Class declaration
Following is the declaration for java.util.Timer class −
public class Timer
extends Object
Class constructors
| Sr.No. |
Constructor & Description |
| 1 |
Timer()
This constructor creates a new timer. |
| 2 |
Timer(boolean isDaemon)
This constructor creates a new timer whose associated thread may be specified to run as a daemon. |
| 3 |
Timer(String name)
This constructor creates a new timer whose associated thread has the specified name. |
| 4 |
Timer(String name, boolean isDaemon)
This constructor creates a new timer whose associated thread has the specified name, and may be specified to run as a daemon. |
Class methods
| Sr.No. |
Method & Description |
| 1 |
void cancel()
This method terminates this timer, discarding any currently scheduled tasks. |
| 2 |
int purge()
This method removes all cancelled tasks from this timer's task queue. |
| 3 |
void schedule(TimerTask task, Date time)
This method schedules the specified task for execution at the specified time. |
| 4 |
void schedule(TimerTask task, Date firstTime, long period)
This method schedules the specified task for repeated fixed-delay execution, beginning at the specified time. |
| 5 |
void schedule(TimerTask task, long delay)
This method schedules the specified task for execution after the specified delay. |
| 6 |
void schedule(TimerTask task, long delay, long period)
This method schedules the specified task for repeated fixed-delay execution, beginning after the specified delay. |
| 7 |
void scheduleAtFixedRate(TimerTask task, Date firstTime, long period)
This method schedules the specified task for repeated fixed-rate execution, beginning at the specified time. |
| 8 |
void scheduleAtFixedRate(TimerTask task, long delay, long period)
This method Schedules the specified task for repeated fixed-rate execution, beginning after the specified delay. |
Methods inherited
This class inherits methods from the following classes −
