Java Long class

Java Phaser getPhase() Methods

Last Updated : 17 Mar 2025

The getPhase() method of Phaser class is used to return the number of current phase number. The maximum value of Phase number is Integer.MAX_VALUE. It returns the negative value if the phase number is negative.

Syntax

Return

It returns the current phase number. Otherwise, it returns the negative number if terminated.

Example 1

import java.util.concurrent.Phaser;
public class JavaPhaserGetPhaseExample1
{
    public static void main(String[] args) throws InterruptedException
    {
          Phaser p = new Phaser(10);
          p.register();
          int pc = p.getPhase(); 
          System.out.println("Initial Phase count is "+pc);
          System.out.println("Thread is sleeping");
          for(int i=0; i<=10; i++)
          {
            new JavaPhaserGetPhaseExample1().test(p);
                  p.arrive();
          }
          pc = p.getPhase();
          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"); 
                    }
               }.start();
    }
}

Output:

Initial Phase count is 0
Thread is sleeping
Thread-0 arrived
Thread-1 arrived
Thread-2 arrived
Thread-3 arrived
Thread-4 arrived
Thread-5 arrived
Thread-6 arrived
Thread-7 arrived
Thread-8 arrived
Final Phase count after arrival of Thread is 1
Thread-10 arrived
Thread-9 arrived

Example 2

import java.util.concurrent.Phaser;
public class JavaPhaserGetPhaseExample2
{
    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 JavaPhaserGetPhaseExample2().test(p);
    }
     private void test(final Phaser p)
    {
        new Thread(){
                @Override
                public void run()
                    {
                        System.out.println(Thread.currentThread().getName()+" arrived");
                        p.arriveAndAwaitAdvance();
                    }
               }.start();
    }
}

Output:

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

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Java Phaser getPhase() Methods

Syntax

Return

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Example 2

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Java Phaser getPhase() Methods

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