button.addActionListener(new StyledEditorKit.AlignmentAction("Left Align",StyleConstants.ALIGN_LEFT));

HTMLEditorKit kit = new HTMLEditorKit();
                    BufferedOutputStream out;
                    try {
                    FileOutputStream i1=new FileOutputStream("C:/SaveFile.vm");
                    out = new BufferedOutputStream(i1);
                        kit.write(out, m_doc, m_doc.getStartPosition().getOffset(), m_doc.getLength());
                    } catch (Exception e21){

                    }

protected HTMLDocument m_doc;
protected StyleSheet m_context;
 InputStream in = new FileInputStream("C:/SaveFile.vm");
m_doc = (HTMLDocument)kit.createDefaultDocument();
kit.read(in, m_doc, 0);
m_context = m_doc.getStyleSheet();
jtextpane.setContentType("text/html");
jtextpane.setDocument(m_doc);