gistfile1.txt

public class Delay<K> {

    private final HashMap<K, Long> map = new HashMap<>();
    private final long min_delay;

    public Delay(long min_delay) {
        this.min_delay = min_delay;
    }

    public void trigger(K key, Handler handler) {
        
        if (map.containsKey(key)) {

            long delay = System.currentTimeMillis()-map.get(key);

            if (delay > min_delay)
                handler.passed(key, delay);
            else
                handler.failed(key, delay);

        } else {
            map.put(key, System.currentTimeMillis());
        }

    }

    public abstract class Handler {

        abstract void passed(K t, long delay);

        abstract void failed(K t, long delay);

    }

}