exampleNamedThreadFactory.java

private AtomicInteger poolIdProvider = new AtomicInteger(0);

public ThreadFactory getThreadFactory(String name) {
    int poolId = poolIdProvider.getAndIncrement();

    //grab security group for use in all threads from this factory
    SecurityManager s = System.getSecurityManager();
    ThreadGroup group = s != null ? s.getThreadGroup() : Thread.currentThread().getThreadGroup();

    return new ThreadFactory() {
        private AtomicInteger threadIdProvider = new AtomicInteger(0);

        @Override
        public Thread newThread(@NotNull Runnable r) {
            Thread thread = new Thread(group, r, threadName(name, poolId, threadIdProvider.getAndIncrement()));
            thread.setDaemon(true);
            return thread;
        }
    };
}

private String threadName(String name, Integer poolId, Integer threadId) {
    return String.join("-",
            name,
            "pool",
            String.valueOf(poolId),
            "thread",
            String.valueOf(threadId));
}