Sum of two large numbers using Strings in Java.

The java BigInteger.add(BigInteger val) method is used for Sum of two large numbers using Strings in Java.

• Enter the use input from Scanner(System.in) object.
• Here sc.nextLine() method return the line with input.
• Now create the two BigInteger object and pass both two large numbers.
• Next use java.math.BigInteger.add(BigInteger val) calculate the Arithmetic Addition of two BigInteger.
• Print the Sum of numbers.

import java.math.BigInteger;
import java.util.Scanner;

public class AddNumberTest {
	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		System.out.println("Enter the first large number");
		String number1 = sc.nextLine();
		
		System.out.println("Enter the second large number");
		String number2 = sc.nextLine();
		
		BigInteger firstNumber = new BigInteger(number1);
		BigInteger secondNumber = new BigInteger(number2);
		
		BigInteger addNumber = firstNumber.add(secondNumber);
		System.out.println("Result of addition is :- " + addNumber);
		
		sc.close();
	}
}

Output :-
Enter the first large number
123456789
Enter the second large number
923847567
Result of addition is :- 1047304356