Question About Thread.sleep

I realize that I can use scheduler programming provided by Bukkit to delay/repeat tasks, but are there times when thread.sleep is OK? I'm currently using it in one of my plugins.

Code:

new Thread(d).start();
 
public class Countdown implements Runnable {
 
    public Player player1 = null;
 
    public void run() {
        try{
            //Converts the countdown value (set in seconds in config) to milliseconds
            Thread.sleep(countdown * 1000);
            arrayList1.remove(player1);
        }catch(Exception ignored){
       
        }
   
    }
}

Obviously I removed a lot of the unnecessary code in the above example. The new thread(d) is started in AsyncPlayerChatEvent.

 

I would not recommend it as it actually stops the thread, this could cause your server to crash or stop players doing tasks (effectively lag), try using a repeating task which allows you to put the delay time in. look at the scheduler tutorial

 

Yes. If your code is running in a seperate thread, so you are not setting the servers main thread sleeping, it's up to you if you want to use thread.sleep.

 

This definitely sounds pretty n00b, but how do I know when I'm sleeping the main thread or using a separate thread? Does my line "new Thread(d).start();" create a new, separate thread?

 

Yes. What do you think the "new" keyword means?

 

I assumed that was correct, but ya know, I'm just being careful by getting a definite answer from people more experienced than I am. Thank you.