Introduction to Programming

Implementing Runnable

The second way to create a thread is to use a class that implements Runnable. Here is an example of such a class that has almost exactly the same functionality as class AThread: 

public class ARunnable implements Runnable {  int i1, i2;  public ARunnable(int i1, int i2) {    this.i1 = i1;    this.i2 = i2;  }  public void run() {    for (int i = i1; i <= i2; i++) {      System.out.println("child thread "  + i);      try {        TimeUnit.SECONDS.sleep(1);      } catch (InterruptedException e) {        e.printStackTrace();      }    }  }}

The only difference is that there is no isDaemon() method in the Runnable interface, so we cannot print whether the thread is daemon or not.