title: I need someone who can write Java Streams. I want to write this code as a Java stream type
body: <pre><code>public List testList(List numberList) {
    List realList = new ArrayList();
    for (Iterator iterator = numberList.iterator(); iterator.hasNext();) {
      String num = (String) iterator.next();
      realList.add(call(num));
    }
    return realList;
  }
  </code></pre>
  <p>I want to write this code as a Java stream type.</p>