If the "start com port listener" line is not a starting a separate thread and its a blocking read then your program will not even get to the sleep until a "port event" occurs (something is read from the socket).
Your program will never read a second "port event" because the "start com port listener" line is only executed once.
Hema and sktom are correct - put the port listener in a separate thread, read the socket in an infinite loop (it blocks if there is nothing to read) and remove the Thread.sleep() (it serves no purpose). If an event takes a non-trivial amount of time to process, then handle them in a separate thread so the "reader" thread can return to reading as quickly as possible.
Tom
-----Original
Message-----
From: Steven [mailto:[EMAIL PROTECTED]]
Sent:
Wednesday, July 24, 2002 12:36 AM
To: JDJList
Subject: [jdjlist] Re:
Thread.sleep problem...Please help
Hi,
I'd like to state more
clear about my problem:
(single thread
application)
main(){
start com port
listener
if(event
occur)
println("hello")
println("before
sleep")
Thread.sleep(10000) //slepp 10
seconds
println("after sleep")
}
how can the
"hello" be printed if the serial port event occurred during the
10 seconds
sleeping time?
Thanks All...hope can
help
Steven
----- Original Message -----
From:
<[EMAIL PROTECTED]>
To: "JDJList"
<[EMAIL PROTECTED]>
Sent: Wednesday, July 24, 2002 9:27
AM
Subject: [jdjlist] Re: Thread.sleep problem...Please help
>
You can always spawn off a second thread from your main thread. One
way
to
> do this is to have your application's class implement the
Runnable
> interface, then from your main thread issue:
>
>
Thread t = new Thread(this);
> t.start();
>
> This will start
your second thread running in Runnable's public void run()
> method which
you'd need to implement.
>
> -----Original Message-----
>
From: Steven [mailto:[EMAIL PROTECTED]]
>
Sent: Tuesday, July 23, 2002 6:10 PM
> To: JDJList
> Subject:
[jdjlist] Re: Thread.sleep problem...Please help
>
>
>
Hi,
>
> Thanks for ur opinion. But what if my application has only
single thread?
> are there any alternatives?
>
> -----
Original Message -----
> From: "Hema Venkataraman"
<[EMAIL PROTECTED]>
> To: "JDJList"
<[EMAIL PROTECTED]>
> Sent: Friday, April 05, 2002 12:42
PM
> Subject: [jdjlist] Re: Thread.sleep problem...Please
help
>
>
> > You have a thread for a COM port which will be
listening for events. You
> > have another Thread to do the actions to
be done. Make them sleep for
few
> > seconds. You can also use
wait and notify in case actions are to be
taken
> > when a
particular event happens.
> >
> >
> >
>
>
> > To change your membership options, refer to:
> >
http://www.sys-con.com/java/list.cfm
>
>
> To change your membership options, refer to:
>
http://www.sys-con.com/java/list.cfm
>
> To change your membership options, refer to:
>
http://www.sys-con.com/java/list.cfm
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