title: Can't see components in JScrollPane
body: <p>I'm using a JScrollPane to hold a JTextArea for a large area of text. I add the TextArea directly to the JFrame, it works fine. But I add it to the scrollpane and add the scrollpane, I don't see the textarea. Here's my SSCCE:</p>
  
  <pre><code>public class foo extends JFrame{
      //gui elements
  JTextArea chatMonitor = new JTextArea();
  
  JScrollPane textPane = new JScrollPane();
  
  ChatFrame(final String nickname, final String login, final String server, final String channel){
      setSize(500,500);
      chatMonitor.setEditable(false);
      chatMonitor.setVisible(true);
      textPane.add(chatMonitor);
      textPane.setAutoscrolls(true);
      textPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
      textPane.setVisible(true);
      add(textPane);
  }
  }
  </code></pre>