JAVA

java check how many digits in a number

int n = 1000;
int length = (int)(Math.log10(n)+1);

//NB: only valid for n > 0

number of digits java

  public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int num = input.nextInt();

        int count = 0;

        while (num > 0) {
            num /= 10;
            count++;
        }
        System.out.println("number of digits: " + count);
    }

how to check the number of digits in a number in java

int length = (int) (Math.log10(number) + 1);

number of digits program in java

int numOfDigits = ((int) Math.floor(Math.log10(number))) + 1