Java/07-Java-Programs/045-Count-Digits.java at main · shaikbasha-dev/Java · GitHub

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* ============================================================================

* Program Name : Count Digits

* File Name : 045-Count-Digits.java

* Class Name : CountDigits

* Description:

* This program accepts an integer from the user and counts

* the total number of digits present in the given number.

* Objective:

* - Understand user input using the Scanner class.

* - Learn how to use the while loop.

* - Count the number of digits in an integer.

* Author : Shaik Mahaboob Basha

* Repository : 01-Core-Java

* Folder : 08-Java-Programs

* ============================================================================

import java.util.Scanner;

public class CountDigits {

// The main() method is the entry point of every Java application.

public static void main(String[] args) {

// Create a Scanner object to read input from the keyboard.

Scanner scanner = new Scanner(System.in);

// Ask the user to enter a number.

System.out.print("Enter a Number: ");

// Read the number entered by the user.

int number = scanner.nextInt();

// Convert the number into a positive value.

number = Math.abs(number);

// Check whether the entered number is zero.

if (number == 0) {

// Display the digit count for zero.

System.out.println("Total Number of Digits: 1");

// Example Output:

// Total Number of Digits: 1

} else {

// Declare and initialize a variable to count digits.

int digitCount = 0;

// Count the digits using the while loop.

while (number != 0) {

// Increase the digit count.

digitCount++;

// Remove the last digit from the number.

number = number / 10;

}

// Display the total number of digits.

System.out.println("Total Number of Digits: " + digitCount);

// Example Output:

// Enter a Number: 12345

// Total Number of Digits: 5

}

// Close the Scanner object to release system resources.

scanner.close();

}

Java/07-Java-Programs/045-Count-Digits.java at main · shaikbasha-dev/Java · GitHub

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