import java.util.*;
public class Test2 {

    public static void main (String [] args){
        IntStruct ints = new IntStruct();
        ints.add(1);
        ints.add(5);
        ints.add(7);
        }
    }

class IntStruct extends ArrayList <Integer>{
    private int total;

    boolean add (int i){
        setTotal();
        return super.add(i);
    }

    void setTotal(){
        total = 0;
        for (int i : this){
            System.out.println("Adding " + i + " to our total..");
            total = total + i;
        }
        System.out.println("The total is now " + total);
    }
}