Trouble inserting text into JEditorPane

Hello.
I am trying to use a URL Connection and the read method to produce an HTML page in a JEditorPane.
 purlRec is a data record that contains information relating to the URL in question.
 pis is an input stream create from the URLConnection.getInputStream() method
private void loadFromURL(UrlRecord purlRec, InputStream pis ) {
URL url;
String tmpStr = (String)purlRec.getUrlName();
String baseUrl = (String)purlRec.getUrlName();
setContentType("text/html");
try {
HTMLDocument doc = (HTMLDocument)getDocument();
doc.setBase(new URL(baseUrl));
this.read(is,doc);
repaint();
catch (Exception e) {
System.err.println("Couldn't create URL: " + tmpStr);
System.out.println("error:"+e.getMessage());
I get the following when I execute the code. Am I not using this correctly or is there something I am missing? I am using the read from input stream so that I can connnect to url that require authentication. I know that the URL connection works because I am able to write the output of the stream to a text file in a test function.
Couldn't create URL: http://www.google.com
java.lang.RuntimeException: Must insert new content into body element-
 at javax.swing.text.html.HTMLDocument$HTMLReader.generateEndsSpecsForMidInsert(HTMLDocument.java:1878)
 at javax.swing.text.html.HTMLDocument$HTMLReader.<init>(HTMLDocument.java:1854)
 at javax.swing.text.html.HTMLDocument$HTMLReader.<init>(HTMLDocument.java:1729)
 at javax.swing.text.html.HTMLDocument$HTMLReader.<init>(HTMLDocument.java:1724)
 at javax.swing.text.html.HTMLDocument.getReader(HTMLDocument.java:125)
 at javax.swing.text.html.HTMLEditorKit.read(HTMLEditorKit.java:228)
 at javax.swing.JEditorPane.read(JEditorPane.java:504)
 at javax.swing.JEditorPane.read(JEditorPane.java:478)
 at com.UrlChecker.panels.HTML.EditorPane._$34246(EditorPane.java:105)
 at com.UrlChecker.panels.HTML.EditorPane.changeUrls(EditorPane.java:142)
 at com.UrlChecker.demo.UrlChecker.changeHtml(UrlChecker.java:131)
 at com.UrlChecker.panels.Report.URLTabView.mouseClicked(URLTabView.java:91)
 at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:208)
 at java.awt.Component.processMouseEvent(Component.java:5096)
 at java.awt.Component.processEvent(Component.java:4890)
 at java.awt.Container.processEvent(Container.java:1566)
 at java.awt.Component.dispatchEventImpl(Component.java:3598)
 at java.awt.Container.dispatchEventImpl(Container.java:1623)
 at java.awt.Component.dispatchEvent(Component.java:3439)
 at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3450)
 at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3174)
 at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3095)
 at java.awt.Container.dispatchEventImpl(Container.java:1609)
 at java.awt.Window.dispatchEventImpl(Window.java:1585)
 at java.awt.Component.dispatchEvent(Component.java:3439)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:450)
 at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:197)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:144)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:136)
 at java.awt.EventDispatchThread.run(EventDispatchThread.java:99)
error:Must insert new content into body element-
Thank you

I tried using this, but I get an UNAUTHORIZED Status code (401) indicating request requires HTTP authentication. ( HttpServletResponse error code ). This is why the encoded authentication is used. It works when I try to just read from the url using an InputStream but not when I try passing the same InputStream to the JEditorPane.
Any Idea of how to use JEditorPane.read(InputStream in , Object desc) or why it would work in one instance and not in the other?
Thanks

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If the button and the textfield are on in the same subform then this code should work in the click event of the button
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p.s. I am making assumptions as the image/file you attached did not appear for me.

Trouble inserting text into JEditorPane

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