Timer in Java

[joshivaibhav]

Hello,

I am running the following code, but it never terminates:


import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;

public class YetAnotherTimer
{
private static Integer iCount = 0;
public static void main (String args[])
{
int numberOfMillisecondsInTheFuture = 10000; // 10 sec

Date timeToRun = new
Date(System.currentTimeMillis()+numberOfMillisecondsInTheFuture);

Timer timer = new Timer();

timer.schedule(new TimerTask()
{
public void run()
{
System.out.println("Generating report");
iCount++;
System.out.println("Count is: " + iCount);
}
}, timeToRun);
}
}

It simply waits in the memory. I am looking for functionality where the
timer will execute a task at a predefined time and once the task is
finished, the timer thread will exit. I tried calling the method
cancel() from within the run() method, but still it does not terminate
the timer thread.

Please let me know.

Thanks,

Vaibhav

 

[Daniel Pitts]

Hello,

I am running the following code, but it never terminates:


import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;

public class YetAnotherTimer
{
private static Integer iCount = 0;
public static void main (String args[])
{
int numberOfMillisecondsInTheFuture = 10000; // 10 sec

Date timeToRun = new
Date(System.currentTimeMillis()+numberOfMillisecondsInTheFuture);

Timer timer = new Timer();

timer.schedule(new TimerTask()
{
public void run()
{
System.out.println("Generating report");
iCount++;
System.out.println("Count is: " + iCount);
}
}, timeToRun);
}
}

It simply waits in the memory. I am looking for functionality where the
timer will execute a task at a predefined time and once the task is
finished, the timer thread will exit. I tried calling the method
cancel() from within the run() method, but still it does not terminate
the timer thread.

Please let me know.

Thanks,

Vaibhav

Look into the Timer(boolean isDaemon) constructor.

 

[joshivaibhav]

I found the problem:

If I use the timer.cancel(); after the statement:

System.out.println("Count is: " + iCount);

The timer terminates properly.