Convert number into array in java

/**
 * @author lautturi.com
 * Java example: convert integer to array of digits in java
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {
		int num = 123456;
		String str = Integer.toString(num);
		int[] numArr = new int[str.length()];
		for (int i = 0; i < str.length(); i++)
		{
			numArr[i] = str.charAt(i) - '0';
		}
		
		System.out.println("numArr:"+Arrays.toString(numArr));
		
	}

}

output:

numArr:[1, 2, 3, 4, 5, 6]