Java Program to Add two Binary Numbers

Author: vidur-ui

Java Program to Add two Binary Numbers

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+import java.util.Scanner;
+public class JavaExample {
+   public static void main(String[] args)
+   {
+	//Two variables to hold two input binary numbers	 
+	long b1, b2;
+	int i = 0, carry = 0;
+
+	//This is to hold the output binary number
+	int[] sum = new int[10];
+
+	//To read the input binary numbers entered by user
+	Scanner scanner = new Scanner(System.in);
+
+	//getting first binary number from user
+	System.out.print("Enter first binary number: ");
+	b1 = scanner.nextLong();
+	//getting second binary number from user
+	System.out.print("Enter second binary number: ");
+	b2 = scanner.nextLong();
+
+	//closing scanner after use to avoid memory leak
+	scanner.close();
+	while (b1 != 0 || b2 != 0) 
+	{
+		sum[i++] = (int)((b1 % 10 + b2 % 10 + carry) % 2);
+		carry = (int)((b1 % 10 + b2 % 10 + carry) / 2);
+		b1 = b1 / 10;
+		b2 = b2 / 10;
+	}
+	if (carry != 0) {
+		sum[i++] = carry;
+	}
+	--i;
+	System.out.print("Output: ");
+	while (i >= 0) {
+		System.out.print(sum[i--]);
+	}
+	System.out.print("\n");  
+   }
+}