Question

How to get the number of digits in an int with Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        int n = 87319;
       
        int digits = (int)(Math.log10(n) + 1);
         
        System.out.println(digits);
    }
}
 
 
 
 
/*
run:
 
5
 
*/

 

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Answer 2

public class MyClass {
    public static void main(String args[]) {
        int n = 873619;
       
        String str = Integer.toString(n);
        
        int digits = str.length();
         
        System.out.println(digits);
    }
}
 
 
 
 
/*
run:
 
6
 
*/

 

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