Java program to add two binary numbers.

Example:

Program:

import java.util.*;

public class Exercise7 {

 public static void main(String[] args)

 {

  long binary1, binary2;

  int i = 0, remainder = 0;

  int[] sum = new int[20];

  Scanner sc = new Scanner(System.in);

  System.out.print("Enter first binary number: ");

  binary1 = sc.nextLong();

  System.out.print("Enter second binary number: ");

  binary2 = sc.nextLong();

  while (binary1 != 0 || binary2 != 0) 

  {

   sum[i++] = (int)((binary1 % 10 + binary2 % 10 + remainder) % 2);

   remainder = (int)((binary1 % 10 + binary2 % 10 + remainder) / 2);

   binary1 = binary1 / 10;

   binary2 = binary2 / 10;

  }

  if (remainder != 0) {

   sum[i++] = remainder;

  }

  --i;

  System.out.print("Sum of two binary numbers: ");

  while (i >= 0) {

   System.out.print(sum[i--]);

  }

   System.out.print("\n");  

 }

}

Save as: Exercise.java

Output: