Java Phaser arriveAndAwaitAdvance() Method

The arriveAndAwaitAdvance() method returns the arrival phase number, or the negative current phase (if terminated). Using this method, the current phaser arrives, and other phaser waits in the queue.

Syntax:

Return:

It returns current phaser number.

Throws:

IllegalStateException - This Exception is thrown when the number of unarrived parties is negative.

Example 1

import java.util.concurrent.Phaser;
public class PhaserArriveAndAwaitAdvanceExample1
{
    public static void main(String[] args) throws InterruptedException
    {
          Phaser p = new Phaser(10);
          p.register();
         int pc = p.getPhase();
          System.out.println("Thread is sleeping");
          Thread.sleep(5000);
          for(int i=0; i<=5; i++)
          {  
            new PhaserArriveAndAwaitAdvanceExample1().test(p);
 }
         
          System.out.println("Final Phase count after arrival of Thread is "+pc); 
    }
    void test(final Phaser p)
    {
        new Thread(){
                @Override
                public void run()
                    { 
                        System.out.println(Thread.currentThread().getName()+" arrived");
                       p.arriveAndAwaitAdvance(); 
                    } 
               }.start();
    }
}

Test it Now

Output:

Thread is sleeping
Thread-0 arrived
Thread-1 arrived
Final Phase count after arrival of Thread is 0
Thread-2 arrived
Thread-4 arrived
Thread-5 arrived
Thread-3 arrived

Example 2

import java.util.concurrent.Phaser;
public class PhaserArriveAndAwaitAdvanceExample2
{
    public static void main(String[] args) throws InterruptedException
    {
          Phaser p = new Phaser();
          p.register();
          System.out.println("Phaser Object is register...");
          int pc = p.getPhase();
          System.out.println("Initial Phase count is "+pc);
          new PhaserArriveAndAwaitAdvanceExample2().test(p);
    }
     private void test(final Phaser p)
    {
        new Thread(){
                @Override
                public void run()
                    {
                        System.out.println(Thread.currentThread().getName()+" arrived");
                        p.arriveAndAwaitAdvance();
                         System.out.println("Thread Arrives and wait");
                    }
               }.start();
    }
}

Test it Now

Output:

Phaser Object is register...
Initial Phase count is 0
Thread-0 arrived

Next TopicJava Phaser

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