class SimpleBitSet extends StampedLock {

    public void put( int key )
    {
        long stamp = writeLock();
        int idx = key >>> 6;
        ensureCapacity( idx );
        data[idx] = data[idx] | (1L << (key & 63));
        unlockWrite( stamp );
    }

    public  SimpleBitSet( int size );

}