Threads

What would be the output from the following code? 
1.   public class Thread373 implements Runnable {
2.       boolean flag = false;
3.       public void start() {
4.           if (!flag)
5.               System.out.println("Hello World");
6.       }
7.       public static void main(String[] args) {
8.           Thread373 t373 = new Thread373();
9.           t373.start();
10.      }
11.  }
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