Java Phaser getRegisteredParties() Method

The getRegisteredParties() Method is of Phaser Class. It returns the number of parties which are registered in current phaser.

Syntax

Return

It returns the number of parties which are registered in the current phaser.

Example 1

import java.util.concurrent.Phaser;
public class PhaserGetRegisteredPartiesExample1
{
    public static void main(String[] args) throws InterruptedException
    {
        int i, j;
          Phaser p = new Phaser();
          p.register();
          int pc = p.getPhase();
          System.out.println("Phasecount is "+pc);
          new PhaserGetRegisteredPartiesExample1().testPhaser(p);
          Thread.sleep(5000);
          pc = p.getPhase();
          System.out.println("Phasecount is "+pc);
           j=p.getRegisteredParties();
          System.out.println("Arrived Registered Parties:"+j);
    }
    private void testPhaser(final Phaser phaser)
    {
        new Thread(){
                @Override
                public void run()
                    {
                        System.out.println(Thread.currentThread().getName()+" arrived");
                       
                    }
               }.start();
    }
}

Test it Now

Output:

Phasecount is 0
Thread-0 arrived
Phasecount is 0
Arrived Registered Parties:1

Example 2

import java.util.concurrent.Phaser;
public class PhaserGetRegisteredPartiesExample2
{
    public static void main(String[] args) throws InterruptedException
    {
        int i, j;
          Phaser p = new Phaser();
          p.register();
          int pc = p.getPhase();
          System.out.println("Phasecount is "+pc);
          for(i=0;i<=5;i++)
          {
          new PhaserGetRegisteredPartiesExample2().testPhaser(p);
          }
          Thread.sleep(5000);
          pc = p.getPhase();
          System.out.println("Phasecount is "+pc);
           j=p.getRegisteredParties();
          System.out.println("Arrived Registered Parties:"+j);
    }
    private void testPhaser(final Phaser phaser)
    {
        new Thread(){
                @Override
                public void run()
                    {
                        System.out.println(Thread.currentThread().getName()+" arrived");
                       
                    }
               }.start();
    }
}

Test it Now

Output:

Phasecount is 0
Thread-0 arrived
Thread-1 arrived
Thread-2 arrived
Thread-3 arrived
Thread-4 arrived
Thread-5 arrived
Phasecount is 0
Arrived Registered Parties:1

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