Java.math.BigInteger.flipBit() Method

Description

The java.math.BigInteger.flipBit(int n) returns a BigInteger whose value is equivalent to this BigInteger with the designated bit flipped. It computes (this ^ (1<<n)).

Declaration

Following is the declaration for java.math.BigInteger.flipBit() method.

public BigInteger flipBit(int n)

Parameters

n − Index of bit to flip.

Return Value

This method returns a BigInteger object whose value is, this ^ (1<<n).

Exception

ArithmeticException − n is negative.

Example

The following example shows the usage of math.BigInteger.flipBit() method.

package com.tutorialspoint;

import java.math.*;

public class BigIntegerDemo {

   public static void main(String[] args) {

      // create 2 BigInteger objects
      BigInteger bi1, bi2;

      // assign value to bi1
      bi1 = new BigInteger("8");//1000

      // perform flipbit operation on bi1 with index 1
      bi2 = bi1.flipBit(1);

      String str = "Flipbit operation on " +bi1+ " at index 1 gives " +bi2;

      // print bi2 value
      System.out.println( str );
   }
}

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

Flipbit operation on 8 at index 1 gives 10