Pool.java

package me.creatures.util;

import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * @author Septron
 * @since February, 28
 */
public class Pool {

    public static Pool singleton;

    static {
        singleton = new Pool();
    }

    private final ThreadFactory factory = new ThreadFactory() {

        private final AtomicInteger count = new AtomicInteger();

        @Override
        public Thread newThread(Runnable r) {
            Thread thread = new Thread(r);

            thread.setName(String.format("Worker-%d", count.getAndIncrement()));

            return thread;
        }
    };

    public final ExecutorService executor = Executors.newCachedThreadPool(factory);

}

class Example implements Callable<Boolean> {

    public static void main(String... args) throws Exception {
        Future<Boolean> a = Pool.singleton.executor.submit(new Example(true));

        // Do other stuff
        // ...

        // Gets the value of the submitted method... (Will wait if it needs to)
        if (a.get()) {
            System.out.println("Hello world from thread " + Thread.currentThread().getName());
        }

        Pool.singleton.executor.shutdown();
    }

    private final boolean stuff;

    public Example(final boolean stuff) {
        this.stuff = stuff;
    }

    @Override
    public Boolean call() throws Exception {
        System.out.println("Hello world from thread " + Thread.currentThread().getName());
        return stuff;
    }
}