Java.util.BitSet.nextClearBit() Method

Description

The java.util.BitSet.nextClearBit(int fromIndex) method returns the index of the first bit that is set to false that occurs on or after the specified starting index.

Declaration

Following is the declaration for java.util.BitSet.nextClearBit() method

public int nextClearBit(int fromIndex)

Parameters

• fromIndex -- the index to start checking from (inclusive).

Return Value

This method returns the index of the next clear bit.

Exception

• IndexOutOfBoundsException -- if the specified index is negative.

Example

The following example shows the usage of java.util.BitSet.nextClearBit() method.

package com.tutorialspoint;

import java.util.*;

public class BitSetDemo {

   public static void main(String[] args) {

      // create 2 bitsets
      BitSet bitset1 = new BitSet(8);
      BitSet bitset2 = new BitSet(8);

      // assign values to bitset1
      bitset1.set(0);
      bitset1.set(1);
      bitset1.set(2);
      bitset1.set(3);
      bitset1.set(4);
      bitset1.set(5);

      // assign values to bitset2
      bitset2.set(2);
      bitset2.set(4);
      bitset2.set(6);
      bitset2.set(8);
      bitset2.set(10);

      // print the sets
      System.out.println("Bitset1:" + bitset1);
      System.out.println("Bitset2:" + bitset2);

      // print the first clear bit of bitset1
      System.out.println("" + bitset1.nextClearBit(0));

      // print the first clear bit of bitset2 after index 5
      System.out.println("" + bitset2.nextClearBit(5));
   }
}

Let us compile and run the above program, this will produce the following result:

Bitset1:{0, 1, 2, 3, 4, 5}
Bitset2:{2, 4, 6, 8, 10}
6
5