OnJava8-Examples/lowlevel/ThreadSize.java at master · CSapprenticeWT/OnJava8-Examples · GitHub

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// lowlevel/ThreadSize.java

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

// {ExcludeFromGradle} Takes a long time or hangs

import java.util.concurrent.*;

import onjava.Nap;

public class ThreadSize {

static class Dummy extends Thread {

@Override public void run() { new Nap(1); }

}

public static void main(String[] args) {

ExecutorService exec =

Executors.newCachedThreadPool();

int count = 0;

try {

while(true) {

exec.execute(new Dummy());

count++;

}

} catch(Error e) {

System.out.println(

e.getClass().getSimpleName() + ": " + count);

System.exit(0);

} finally {

exec.shutdown();

}