Question

how do i

**
   * construct a new ShoppingBag with contents initialised from args[] array.
   * contents of the ShoppingBag must be ordered in the same way as the args are supplied
   * i.e. args[0] on the bottom of the bag, args[length-1] on the top.
   * @param args
   */
   public ShoppingBag(GroceryItem... args) {
       // YOUR CODE HERE
   }
in java please

Answer 1

import java.util.Stack;

public class ShoppingBag
{
   // assuming the the below instance variables in ShoppingBag class
   private Stack<GroceryItem> bag; // stack data structure to represent the shopping bag
   /**
* construct a new ShoppingBag with contents initialised from args[] array.
* contents of the ShoppingBag must be ordered in the same way as the args are supplied
* i.e. args[0] on the bottom of the bag, args[length-1] on the top.
* @param args
*/

public ShoppingBag(GroceryItem... args) {

   bag = new Stack<GroceryItem>(); // create a new bag
   // insert the contents of the args in the bag in the same order as in args i.e args[0] on the bottom and args[length-1] at the top
   for(int i=0;i<args.length;i++)
           bag.push(args[i]);
}

}