A BitSet is a dynamically growing array containing bits.
This dynamically growing structure has two values describing its internal dimensions: a size and a length.
public int size() public int length()
import java.util.BitSet; public class MainClass { public static void main (String args[]) {
BitSet bites = new BitSet();
bites.set(0);
bites.set(1);
bites.set(2);
bites.set(3);