Java BigInteger flipBit() method

The flipBit() method of Java BigInteger class is used to flip a particular bit position in a BigInteger.This method returns the BigInteger after flipping its bit at index n.

Syntax:

Parameter:

n- The position of the bit to be flipped

Return value

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

Throws:

ArithmeticException? if n is negative.

Example 1

import java.math.BigInteger;

public class BigIntegerFlipBitExample1 {
public static void main(String[]  args){
// create 2 BigIntegerobject
BigInteger big1,big2;

// assign value to big1
big1= new BigInteger("5");  // 0101

// perform flipbit operation on big1 with index 1 
big2= big1.flipBit(1);   // 0111

String str="FlipBit operation on " +big1+ " at index 1 gives "+ big2;
System.out.println(str);   
}
}

Test it Now

Output:

FlipBit operation on 5 at index 1 gives  7

Example 2

import java.math.BigInteger;

public class BigIntegerFlipBitExample2 {
public static void main(String[]  args){
// create 2 BigIntegerobject
BigInteger big1,big2;

// assign value to big1
big1= new BigInteger("5");  // 0101

// perform flipbit operation on big1 with index -1 
big2= big1.flipBit(-1);   

String str="FlipBit operation on " +big1+ " at index  -1 gives "+ big2;
System.out.println(str);   
}
}

Test it Now

Output:

java.lang.ArithmeticException: Negative bit address

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