how to get length of integer in java

/**
 * @author lautturi.com
 * Java example: find the length of a integer number in java
 */

import java.util.*;

public class Lautturi {
	
	public static void main(String[] args) {

		int i = 123456; 
		int len = String.valueOf(i).length(); 
		System.out.println(len);
		
	}
}

output:

6