Event

gistfile1.java

import lombok.Getter;

public class Event implements Comparable<Event> {
	@Getter
	private volatile Runnable runnable;
	@Getter
	private final long time;
	@Getter
	private boolean canceled = false;
	@Getter
	private boolean done = false;

	public Event(Runnable runnable, long time) {
		this.runnable = runnable;
		this.time = time;
		this.canceled = false;
		this.done = false;
	}

	public void cancel() {
		runnable = null;
		canceled = true;
	}

	public void run() {
		Runnable call = runnable;
		if (call != null && !done) {
			call.run();
			done = true;
		}
	}

	@Override
	public int compareTo(Event o) {
		long diff = time - o.time;
		if (diff == 0L) {
			return 0;
		}
		return diff > 0L ? 1 : 0;
	}
}