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POCyclicBarrier not working as expected
 

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    <p>I am trying to simulate a triatlon competition using <code>CyclicBarrier</code> but it doesn't work as expected and I don't know why.</p> <p>Each part of the competition has to wait till all the runners have completed the previous one, but it seems like it's waiting forever.</p> <p>This is the piece of code for the phase one:</p> <pre><code>class Runner implements Runnable { private CyclicBarrier bar = null; private static int runners; private static double[] time; private int number; public static String name; public Runner(int runners, String name) { time = new double[runners]; for (int i=0; i&lt;runners; i++) time[i] = 0; this.name= name; } public Runner(CyclicBarrier bar, int number) { this.bar = bar; this.number = number; } public void run() { try { int i = bar.await(); } catch(InterruptedException e) {} catch (BrokenBarrierException e) {} double tIni = System.nanoTime(); try { Thread.sleep((int)(100*Math.random()); } catch(InterruptedException e) {} double t = System.nanoTime() - tIni; time[number] += t; } } public class Triatlon { public static void main(String[] args) { int runners = 100; CyclicBarrier Finish_Line_1 = new CyclicBarrier (runners); Runner c = new Runner(runners, "Triatlon"); ExecutorService e = Executors.newFixedThreadPool(runners); for (int i=0; i&lt;runners; i++) e.submit(new Runner(Finish_Line_1, i)); System.out.println(Finish_Line_1.getNumberWaiting()); // this always shows 99 try { int i = Finish_Line_1.await(); } catch(InterruptedException e01) {} catch (BrokenBarrierException e02) {} System.out.println("Swimming phase completed"); // here the rest of the competition, which works the same way } } </code></pre>
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