This code should iterate through an array of Parcels in ArrayList valueArrayList and print each Parcel’s number in displayJTextArea. Find the error(s) in the following code.

Question

```
1 Iterator valueIterator = valueArrayList.iterator();
2
3 while ( valueIterator.hasNext() )
4 {
5 displayJTextArea.setText( String.valueOf(
6 valueIterator.getParcelID() ) );
7
8 } // end while loop
```

Answer 1

Method next must be called to reference the elements of the ArrayList. You must obtain an object reference to each object in the ArrayList and use that reference to display the data. Also, use append method instead of setText to display each Parcel’s number in displayJTextArea.
```
1 Iterator valueIterator = valueArrayList.iterator();
2
3 while ( valueIterator.hasNext() )
4 {
5 Parcel currentParcel = ( Parcel ) valueIterator.next();
6
7 displayJTextArea.append(
8 String.valueOf( currentParcel.getParcelID() ) + "\n" );
9
10 } // end while loop
```