Java.math.BigInteger.setBit() Method

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Description

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

Declaration

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

public BigInteger setBit(int n)

Parameters

n − Index of bit to set.

Return Value

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

Exception

ArithmeticException − If n is negative.

Example

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

package com.tutorialspoint;

import java.math.*;

public class BigIntegerDemo {

   public static void main(String[] args) {

      // create 2 BigInteger objects
      BigInteger bi1, bi2;

      bi1 = new BigInteger("7");

      // perform setbit operation on bi1 using index 3
      bi2 = bi1.setBit(3);

      String str = "Setbit operation on " +bi1+ " at index 3 gives " +bi2;

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

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

Setbit operation on 7 at index 3 gives 15