// Class that incorporates a number in an accumulated sum (or product).
// Each number can be added to a sum or
//   it can be incorporated in a product.
// Student exercise - add product data field and methods multiply() and
//     getProduct()
//   modify method main in class LoopTestApp

public class Accumulator {
  // data fields
  private int sum;      // accumulated sum so far

  // num is next number to add to sum
  public void add(int num) {
     sum += num;
  }

  // Methods to be implemented
  // public void multiply(int num) { }
  // public int getProduct()

  public int getSum() {
     return sum;
  }

  // Returns a String representing the contents of an Accumulator object
  //  Modify to include product.
  public String toString() {
     return "Sum so far is " + sum;
  }
}