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Java BigInteger Class | negate() Method with Example

BigInteger Class negate() method: Here, we are going to learn about the negate() method of BigInteger Class with its syntax and example.
Submitted by Preeti Jain, on May 11, 2020

BigInteger Class negate() method

• negate() method is available in java.math package.
• negate() method is used to negate the value of this BigInteger.
• negate() 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.
• negate() method does not throw an exception at the time of negating the value of this object.

Syntax:

    public BigInteger negate();

Parameter(s):

• None

Return value:

The return type of this method is BigInteger, it returns BigInteger that holds the value negation of this object by using [ - (this BigInteger) ].

Example:

// Java program to demonstrate the example 
// of BigInteger negate() method of BigInteger

import java.math.*;

public class NegateOfBI {
    public static void main(String args[]) {
        // Initialize two variables str1 and str2
        String str1 = "-1030";
        String str2 = "1030";

        // Initialize two BigInteger objects
        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();

        System.out.println("negate(): ");

        // returns the negate value of this BigInteger
        // like (-b_int1)

        BigInteger negate = b_int1.negate();
        System.out.println("b_int1.negate(): " + negate);

        // returns the negate value of this BigInteger
        // like (-b_int2)
        negate = b_int2.negate();
        System.out.println("b_int2.negate(): " + negate);
    }
}

Output

b_int1: -1030
b_int2: 1030

negate(): 
b_int1.negate(): 1030
b_int2.negate(): -1030