Java Utility Library

Java BitSet - flip() Method

The java.util.BitSet.flip() method is used to set the bit at the specified index to the complement of its current value in the given BitSet.

Syntax

public void flip(int bitIndex)

Parameters

bitIndex Specify the index of the bit to flip.

Return Value

void type.

Exception

Throws IndexOutOfBoundsException, if the specified index is negative.

Example:

In the example below, the java.util.BitSet.flip() method is used to flip the bit at the specified index in the given BitSet.

import java.util.*;

public class MyClass {
  public static void main(String[] args) {
    //creating a BitSet
    BitSet BSet = new BitSet();

    //populating the BitSet
    BSet.set(10);
    BSet.set(20);
    BSet.set(30);
    BSet.set(40);
    BSet.set(50);

    //printing the BitSet
    System.out.println("BSet contains: " + BSet);

    //flipping the bit for index 30, 35 and 40
    BSet.flip(30);
    BSet.flip(35);
    BSet.flip(40);

    //printing the BitSet
    System.out.println("BSet contains: " + BSet);
  }
}

The output of the above code will be:

BSet contains: {10, 20, 30, 40, 50}
BSet contains: {10, 20, 35, 50}

❮ Java.util - BitSet