public static int arraySize(final int expected, final float f) {
    final long s = Math.max(2, nextPowerOfTwo((long)Math.ceil(expected / f)));
    if (s > (1 << 30)) throw new IllegalArgumentException("Too large (" + expected + " expected elements with load factor " + f + ")");
    return (int)s;
  }
public static int arraySize(final int expected, final float f)