Question

public static void printFib(List<Integer> fib){
    JTextArea text = new JTextArea();
    for(Iterator<Integer> it = fib.iterator(); it.hasNext(); it.next() ){
        text.append(it.toString());
        text.append("\n");
    }
    JOptionPane.showMessageDialog(null,text);
}

How can I modify this to have it actually print the data contents and not the pointer address?

Answer 1

Do you really need an interator?

for (Integer i : fib)
{
    text.append(i.toString());
    text.append("\n");
}

If for some reason you need an iterator for something else, then you use it as:

Iterator<Integer> it = fib.iterator();
while (it.hasNext())
{
    text.append(it.next().toString());
    text.append("\n");
}

Edit: To summarize comments below; Rather than getting the Integer the iterator contained via it.next(), The OP was calling the iterator’s toString() method and receiving a String containing the hex representation of the iterator’s hash code.