public class Send extends Thread { Message message; int id; public Send(Message m, int i) { message = m; id = i; } public void run() { for (int g=0; g<5; g++) { message.put(g); System.out.println("the "+g+" message was sent by: "+id); try{ sleep((long)(Math.random()*1000)); } catch(InterruptedException e){} } } }