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Java BigInteger Class | not() Method with Example

BigInteger Class not() method: Here, we are going to learn about the not() method of BigInteger Class with its syntax and example.
Submitted by Preeti Jain, on May 11, 2020

BigInteger Class not() method

• not() method is available in java.math package.
• not() method is used to perform not operation on the value of this BigInteger.
• not() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
• not() method does not throw an exception at the time of performing not operation.

Syntax:

    public BigInteger not();

Parameter(s):

• None

Return value:

The return type of this method is BigInteger, it returns BigInteger that holds the value [~(this BigInteger) ].

Example:

// Java program to demonstrate the example 
// of BigInteger not() method of BigInteger

import java.math.*;

public class NotOfBI {
    public static void main(String args[]) {
        // Initialize two variables str1 and str2
        String str1 = "10";
        String str2 = "-5";

        // Initialize two BigInteger object 
        BigInteger b_int1 = new BigInteger(str1);
        BigInteger b_int2 = new BigInteger(str2);

        // Display b_int1 and b_int2
        System.out.println("b_int1: " + b_int1);
        System.out.println("b_int2: " + b_int2);

        System.out.println();

        // Display Binary representation of 
        // str1 and str2 
        System.out.println("Binary Representation of 10: 1010 ");
        System.out.println("Binary Representation of -5: 0101 ");

        System.out.println();

        // Here, we are performing logical
        // NOT operation on this BigInteger
        // b_int1 by using not() method and it
        // returns result with (-) sign when this
        // BigInteger value is positive

        BigInteger not_val = b_int1.not();
        System.out.println("b_int1.not(): " + not_val);

        // Here, we are performing logical
        // NOT operation on this BigInteger
        // b_int2 by using not() method and
        // it returns positive value result when
        // this BigInteger value is negative
        not_val = b_int2.not();
        System.out.println("b_int2.not(): " + not_val);
    }
}

Output

b_int1: 10
b_int2: -5

Binary Representation of 10: 1010 
Binary Representation of -5: 0101 

b_int1.not(): -11
b_int2.not(): 4