[Mohinder]

Hi guys,

I've been reading a lot on how to let the program sleep for X seconds/minutes.

For example;

I want to create a loop that checks a specific condition for every X minutes.
What is the best way to do this?

[Stealth™]

You could use a ScheduledExecutorService to accomplish this.

[g4143]

Hi guys,

I've been reading a lot on how to let the program sleep for X seconds/minutes.

For example;

I want to create a loop that checks a specific condition for every X minutes.
What is the best way to do this?

It really depends on the specific condition you are waiting for. If its IO then there are plenty of solutions which allow a program to wait/timeout without consuming resources.

[Psifour]

It really depends on the specific condition you are waiting for. If its IO then there are plenty of solutions which allow a program to wait/timeout without consuming resources.

This.

We are unable to adequately answer your question without more information. If you can provide a bit more detail I am sure that we can get you an optimal solution.

[Mohinder]

I should have tell you guys some more, excuse me.
I do have a while loop in my main thread thats waiting for a command. The loop crawls a page and look for any new command. I don't want the loop to check every second, because that will cause the page to be disappointed with the crawler.

Code

while (1 < 2)
        {
            if (!cmds.contains(data)) {
                cmds.add(data);

            }
            try {
                TimeUnit.SECONDS.sleep(waitingTime);

            } catch (InterruptedException ex) {
                
            }
        }

I'm now doing it this way, but I don't know how to do this properly.

[Stealth™]

I should have tell you guys some more, excuse me.
I do have a while loop in my main thread thats waiting for a command. The loop crawls a page and look for any new command. I don't want the loop to check every second, because that will cause the page to be disappointed with the crawler.

Code

while (1 < 2)
        {
            if (!cmds.contains(data)) {
                cmds.add(data);

            }
            try {
                TimeUnit.SECONDS.sleep(waitingTime);

            } catch (InterruptedException ex) {
                
            }
        }

I'm now doing it this way, but I don't know how to do this properly.

Like I said, use a ScheduledExecutorService.

[Mohinder]

Like I said, use a ScheduledExecutorService.

I will try that out, I will post the results here.

EDIT:

I've tryed it out and it works perfect man. A lot of thanks!

Code

Runnable controleren = new Runnable() {
            public void run() {
                if (!cmds.contains(data)) {
                    cmds.add(data);
                }
            }
        };

        ScheduledExecutorService loop = Executors.newSingleThreadScheduledExecutor();
        loop.scheduleAtFixedRate(controleren, 0, 5, TimeUnit.SECONDS);