Compile Java File: ExecutornewCachedThreadPoolExample1

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

public class ExecutornewCachedThreadPoolExample1  {
	
   public static void main(final String[] arguments) throws InterruptedException {
      ExecutorService excr = Executors.newCachedThreadPool();
      ThreadPoolExecutor mypool = (ThreadPoolExecutor) excr;
//print statement will print the pool size.
      System.out.println("size of mypool: " + mypool.getPoolSize());
      excr.submit(new Threadimpl());
      excr.submit(new Threadimpl());
      System.out.println("Total number threads scheduled): "+ mypool.getTaskCount());
      excr.shutdown();
   }

static class Threadimpl implements Runnable {

public void run() {
         
         try {
            Long num = (long) (Math.random() / 30);
            System.out.println("Thread Name: " +Thread.currentThread().getName());
               TimeUnit.SECONDS.sleep(num);
            System.out.println("after sleep Thread Name: " +Thread.currentThread().getName());
         } catch (InterruptedException e) {
            e.printStackTrace();
         }
      }
   }
}

Output

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