CODEWITHSUNDEEP
javamultithreading
Mertcan Ekiz
Mertcan Ekiz

Reputation: 711

Running a thread more than once

I have a Thread which runs my game loop. I want to be able to run this game loop each time I start a new game. But since the threads in Java can only be started once, how can I do this?

Upvotes: 1

Views: 1384

Answers (4)

Kumar Vivek Mitra
Kumar Vivek Mitra

Reputation: 33534

1. When you say that "you need to run a thread", i means you want to start a sub-task on a separate thread.

2. Now if you mean this certain sub-task, then please prefer to run a new thread.

3. As you said But since the threads in Java can only be started once

This means that when a thread (thread of execution) completes its run() method, then the Thread object associated with it permanently looses its threadness, right....

But if this thread is from a pool, then the pool itself manages the Thread objects and its reused. Try using Executors from java.util.concurrent package.

Upvotes: 2

paulsm4
paulsm4

Reputation: 121649

1) The short answer is precisely what SLaks already said: just "...create a new thread around the same runnable instance and start that."

2) I think you might be confused about the distinction between the everyday meaning of "start", and the semantics of the Java Thread method "start()". This tutorial might help:

3) Should you wish to re-use the same thread, you can use the methods "wait()" and "resume()":

Upvotes: 0

Stephen C
Stephen C

Reputation: 718788

Since you want the Thread that runs the game loop to keep running it, you need to code it something like this:

  public class GameLoop implements Runnable {
      ...
      public void run() {
         while (gameNotFinished) {
            // do stuff
         }
      }
  }

If that is not working, then the chances are that the run() method is dying because of an exception that you are not catching / logging, and therefore not noticing.

Upvotes: 2

SLaks
SLaks

Reputation: 887405

Create a new Thread around the same Runnable instance and start that.

Upvotes: 3

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