Java thread start () without join () or interrupt () in servlets

I have a servlet filter that carries some logic and produces output before the request is served by the primary page. I have a new need to send output a few seconds later than at the time of its creation (with a delay of ~ 10 s). Due to some bad design choices I made earlier, I am unable to move the position of the filter to get the result posted after.

I chose to create a stream and delay the message transmission there. I am not currently taking any explicit steps to stop this thread from executing. I'm not sure if everything is clearing up correctly. Should I use the join () or interrupt () functions or any other Thread methods to safely clean up afterwards?

So, in the main servlet code, I have something like this ...

Thread t = new Thread(new MessageSender(message, 10000));
t.start();
//Carry on.. la la la

      

        
        
        
      

    

While there are other fields in this class, I just stripped out a lot of unnecessary things like creating DB links etc. to make it clear.

private static class MessageSender implements Runnable {
    String message;
    int delay;

    public MessageSender(String message, int delay) {
        this.message = message;
        this.delay = delay;
    }

    public void run() {
        try {
            Thread.sleep(delay);
            System.out.println(new java.util.Date() + ": hello world");                
        } catch (InterruptedException e) {
            // Do blah
        } catch (Exception e) {
            // Do blah blah
        } finally {
            // Close connections and stuff
        }
    }
}