Sum of Array without second variable

// @author Aamir khan
// @url aamir-4u.blogspot.com
public class ArrayAdditon {
public static void main(String args[]){
int add[]={1,2,3,4,5,45,67,45,78,89,90};
int i;
for(i=0;i<add.length;i++) {
    add[i]+=add[i+1];
    add[i+1]=add[i];
}
   System.out.println("Total = "+add[add.length-1]);
 }
}