title: newline character in JLabel.setText()
body: <p>How can I insert a newline when I am using JLabel.setText()? I tried to use Html but can seem to make it work for setText, only for the initial declaration of the jLabel</p>
  
  <p>the way to do it when initially declaring the jlabel is:</p>
  
  <pre><code>label = new JLabel("&lt;html&gt;Hello World!&lt;br&gt;blahblahblah&lt;/html&gt;");
  </code></pre>
  
  <p>my code:</p>
  
  <pre><code>textString += "&lt;html&gt; quantityTextField.getText() +
     theInventory.findItem(UPCTextField.getText()).toString() + &lt;br&gt; &lt;/html&gt;";
  
  purchaseInfo.setText( textString);
  </code></pre>
  
  <p>it displays the html tags and the method names instead of the string returned by the methods</p>