Java program to pass an integer as argument and find the sum of its digits

Write a program to pass an integer as argument and find the sum of its digits.

class SumOfDigit
{
	public static void main(int a)
	{
		int i,d,s=0;
		for(i=a;i>0;i=i/10)
		{
			d=i%10;
			s=s+d;
		}
		System.out.println("Sum="+s);
	}
}