Java Program to add two binary numbers using ParseInt

Program

import java.util.Scanner;
public class AddTwoBinaryNumbersUsingParseInt {
    public void addBinaryNumbers(String binaryNum1, String binaryNum2)
    {
        int num1 = Integer.parseInt(binaryNum1, 2);
        int num2 = Integer.parseInt(binaryNum2, 2);
        int sum = num1 + num2;
        System.out.println(Integer.toBinaryString(sum));
    }
    public static void main(String[] args)
    {
        AddTwoBinaryNumbersUsingParseInt addTwoBinaryNumbersUsingParseInt= new AddTwoBinaryNumbersUsingParseInt();
        Scanner reader = new Scanner(System.in);
        System.out.print("Enter the first binary number: ");
        String binaryNum1 = reader.nextLine();
        System.out.print("Enter the second binary number: ");
        String binaryNum2 = reader.nextLine();
        System.out.print("Sum of two numbers is: ");
        addTwoBinaryNumbersUsingParseInt.addBinaryNumbers(binaryNum1, binaryNum2);
    }
}

This program demonstrates adding two binary numbers by converting them to decimal values using Integer.parseInt() and then performing the addition.

Use Case:

This approach is ideal for scenarios where:

• The input binary numbers can be easily converted to decimal.
• The focus is on leveraging Java's built-in methods for efficient processing.

1. Input:

   • The user is prompted to enter two binary numbers as String inputs using the Scanner class.

2. Conversion:

   • Integer.parseInt(binaryNum, 2):
     • Converts the binary string input into its decimal (base-10) equivalent.
     • The second parameter, 2, specifies that the input string is in binary format.

3. Addition:

   • The two converted decimal values are added together to compute the sum.

4. Result Conversion:

   • Integer.toBinaryString(sum):
     • Converts the decimal result back into a binary string.

5. Output:

   • The program prints the binary representation of the sum.

6. Execution:

   • Example:

     Enter the first binary number: 1101
     Enter the second binary number: 1011
     Sum of two numbers is: 11000
     

   • Steps:
     • Convert 1101 (binary) to 13 (decimal).
     • Convert 1011 (binary) to 11 (decimal).
     • Add 13 + 11 = 24 (decimal).
     • Convert 24 (decimal) to 11000 (binary).

Key Features:

• Simplicity:
  • Using Integer.parseInt and Integer.toBinaryString simplifies the addition process by leveraging built-in functions for conversions.
• Accuracy:
  • The program ensures accurate addition without needing manual binary arithmetic.

Output

$ javac AddTwoBinaryNumbersUsingParseInt.java
$ java AddTwoBinaryNumbersUsingParseInt
Enter the first binary number: 10101
Enter the second binary number: 11100
Sum of two numbers is: 110001