Re: Chronometer

From:

Knute Johnson <nospam@rabbitbrush.frazmtn.com>

Newsgroups:

comp.lang.java.programmer

Date:

Tue, 18 Sep 2007 15:44:21 -0700

Message-ID:

<9xYHi.276985$BX3.50096@newsfe13.lga>

gaijinco wrote:

I suppose this is kind of an easy question but I'm getting a hard time
with it.

I want to have a loop that breaks upon a normal condition and a time-
condition namely to stop if the other condition haven't been met after
T milliseconds.

I have never used threads and to find how to do this I have read a lot
of info that doesn't seems to apply.

Thank you very much!

The others are great examples. I just like this because it is very simple.

public class test7 {
     static volatile boolean timesUpFlag;

     public static void main(String[] args) {

         // create timer thread
         Runnable r = new Runnable() {
             public void run() {
                 try {
                     Thread.sleep(3000);
                     timesUpFlag = true;
                 } catch (InterruptedException ie) {
                     ie.printStackTrace();
                 }
             }
         };
         new Thread(r).start(); // start timer

         int x = 0;

         // loop until x == Integer.MAX_VALUE or time is up
         while (++x < Integer.MAX_VALUE && !timesUpFlag)
             ;

         if (x == Integer.MAX_VALUE)
             System.out.println("done");
         else
             if (timesUpFlag)
                 System.out.println("timed out x = " + x);

     }
}

--

Knute Johnson
email s/nospam/knute/