BitSet: set(int bitIndex)

 
/*
 * Output:
Initial pattern in bits1: 
{0, 2, 4, 6, 8, 10, 12, 14}

Initial pattern in bits2: 
{1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 13, 14}

bits2 AND bits1: 
{2, 4, 6, 8, 12, 14}

bits2 OR bits1: 
{0, 2, 4, 6, 8, 10, 12, 14}

bits2 XOR bits1: 
{}  
 */

import java.util.BitSet;

public class MainClass {
  public static void main(String args[]) {
    BitSet bits1 = new BitSet(16);
    BitSet bits2 = new BitSet(16);

    // set some bits
    for (int i = 0; i < 16; i++) {
      if ((i % 2) == 0)
        bits1.set(i);
      if ((i % 5) != 0)
        bits2.set(i);
    }

    System.out.println("Initial pattern in bits1: ");
    System.out.println(bits1);
    System.out.println("\nInitial pattern in bits2: ");
    System.out.println(bits2);

    // AND bits
    bits2.and(bits1);
    System.out.println("\nbits2 AND bits1: ");
    System.out.println(bits2);

    // OR bits
    bits2.or(bits1);
    System.out.println("\nbits2 OR bits1: ");
    System.out.println(bits2);

    // XOR bits
    bits2.xor(bits1);
    System.out.println("\nbits2 XOR bits1: ");
    System.out.println(bits2);
  }
}