Example: Decimal to Binary Converter in Java

// Decimal to Binary Converter in Java
import java.util.Scanner;

// Main class containing the entry point of the program
public class Main {
    public static void main(String[] args) {
        // Step 1: Create a Scanner object to read user input
        Scanner scanner = new Scanner(System.in);

        // Step 2: Prompt the user to enter a decimal number
        System.out.print("Enter a decimal number: ");
        int decimalNumber = scanner.nextInt();

        // Step 3: Handle the special case for 0
        if (decimalNumber == 0) {
            System.out.println("Binary representation: 0");
            scanner.close();
            return;
        }

        // Step 4: Initialize a StringBuilder to store binary digits
        StringBuilder binaryResult = new StringBuilder();

        // Step 5: Perform repeated division by 2
        int tempDecimal = decimalNumber;
        while (tempDecimal > 0) {
            int remainder = tempDecimal % 2; // Get the remainder
            binaryResult.append(remainder);  // Append the remainder
            tempDecimal = tempDecimal / 2;   // Divide by 2
        }

        // Step 6: Reverse the StringBuilder to get the correct binary order
        binaryResult.reverse();

        // Step 7: Print the binary representation
        System.out.println("Binary representation: " + binaryResult.toString());

        // Step 8: Close the scanner
        scanner.close();
    }
}