number of digits in java code example

Example 1: how to get length of integer in java

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

Example 2: len of number in java

Scanner s = new Scanner(System.in);
		int n = s.nextInt();
		
		int length = String.valueOf(n).length();
		System.out.print(length);

Example 3: count the number of digits in an integer in java

import java.util.Scanner;
public class CountingDigitsInInteger {
   public static void main(String args[]){
      Scanner sc = new Scanner(System.in);
      int count = 0;
      System.out.println("Enter a number ::");
      int num = sc.nextInt();
      while(num!=0){
         num = num/10;
         count++;
      }
      System.out.println("Number of digits in the entered integer are :: "+count);
   }
}