What is preventing this Phaser/SingleThreadExecutor example program from returning? | Together Java | Page 1

<@&987246399047479336> please have a look, thanks.

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aser(1);
ExecutorService executor = Executors.newSingleThreadExecutor();

      executor.submit(() -> {
        System.out.println("Task 1 started");
        phaser.arriveAndAwaitAdvance();
        System.out.println("Task 1 completed");
      });
      
      executor.shutdown();
    }

The program is not returning because the Phaser object is initialized with a phase count of 1, but the arriveAndAwaitAdvance() method is never called on the Phaser object. This method is used to advance the phase and wait for all parties to arrive at that phase before continuing. Since it is not called in this example, the program will hang indefinitely waiting for the phase to advance.

To fix this issue, you can add a call to phaser.arriveAndAwaitAdvance() after submitting the task to the executor. This will allow the program to continue and eventually return after completing the task.

#What is preventing this Phaser/SingleThreadExecutor example program from returning?