OnJava8-Examples/concurrency/SelfManaged.java

// concurrency/SelfManaged.java
// (c)2016 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
// A Runnable containing its own driver Thread.

public class SelfManaged implements Runnable {
  private int countDown = 5;
  private Thread t = new Thread(this);
  public SelfManaged() { t.start(); }
  @Override
  public String toString() {
    return Thread.currentThread().getName() +
      "(" + countDown + "), ";
  }
  @Override
  public void run() {
    while(true) {
      System.out.print(this);
      if(--countDown == 0)
        return;
    }
  }
  public static void main(String[] args) {
    for(int i = 0; i < 5; i++)
      new SelfManaged();
  }
}
/* Output:
Thread-0(5), Thread-4(5), Thread-3(5), Thread-1(5),
Thread-2(5), Thread-2(4), Thread-2(3), Thread-1(4),
Thread-3(4), Thread-4(4), Thread-0(4), Thread-4(3),
Thread-3(3), Thread-1(3), Thread-2(2), Thread-1(2),
Thread-3(2), Thread-4(2), Thread-0(3), Thread-4(1),
Thread-3(1), Thread-1(1), Thread-2(1), Thread-0(2),
Thread-0(1),
*/