jQuery-ajax-like event handler

package com.doublescoring.socredit.domain;

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

public class Event {
	private ExecutorService executor = Executors.newCachedThreadPool();
	private Runnable errorHandler;
	private Runnable successHandler;
	private final Object lock = new Object();
	private boolean finished;
	private boolean failed;

	public Event post(String event) {
		executor.submit(() -> {
			synchronized (lock) {
				finished = true;
				if (successHandler != null) successHandler.run();
			}
			try {
				Thread.sleep(1000L);
			} catch (InterruptedException e) {
				synchronized (lock) {
					failed = true;
					if (errorHandler != null) errorHandler.run();
				}
			}

		});
		return this;
	}

	public Event fail(Runnable callback) {
		this.errorHandler = callback;
		synchronized (lock) {
			if (failed) {
				this.errorHandler.run();
			}
		}
		return this;
	}

	public Event done(Runnable callback) {
		this.successHandler = callback;
		synchronized (lock) {
			if (finished) {
				this.successHandler.run();
			}
		}

		return this;
	}

	public static void main(String[] args) {
		new Event().post("")
				.done(() -> System.out.println("Success!"))
				.fail(() -> System.out.println("Fail!!"));
	}
}