how to check a specific time of day in a program

[k.sahici]

Hi,

What I need to do is to make my program do sth(for instance execute a
function) everyday at 15.00.

Of course I can check the time in a seperate thread, and execute the
function just in time. However, that way seems silly to me. What's
more, it uses the cpu until it's 15.00 and maybe decreases efficiency.

Is there a professional way of waiting for a specific time of day in a
program?

Thanks

 

[GArlington]

Hi,

What I need to do is to make my program do sth(for instance execute a
function) everyday at 15.00.

Of course I can check the time in a seperate thread, and execute the
function just in time. However, that way seems silly to me. What's
more, it uses the cpu until it's 15.00 and maybe decreases efficiency.

Is there a professional way of waiting for a specific time of day in a
program?

Thanks

http://java.sun.com/j2se/1.3/docs/api/java/util/Timer.html
http://java.sun.com/j2se/1.5.0/docs/api/java/util/concurrent/ScheduledThreadPoolExecutor.html
....

 

[Nigel Wade]

Hi,

What I need to do is to make my program do sth(for instance execute a
function) everyday at 15.00.

Sth? What is sth?
Is it perhaps a Sith from Star Wars, and you want to poke his eye out at 15:00?

Of course I can check the time in a seperate thread, and execute the
function just in time. However, that way seems silly to me. What's
more, it uses the cpu until it's 15.00 and maybe decreases efficiency.

Is there a professional way of waiting for a specific time of day in a
program?

java.util.Timer.

 

[Roedy Green]

What I need to do is to make my program do sth(for instance execute a
function) everyday at 15.00.

To do it with Java, means you have a fat JVM running all day. If you
do it with the OS specific cron/task scheduler function, there will be
no extra overhead.

If you still want Java, see http://mindprod.com/jgloss/timer.html