Add icon to JTextPane in Java

import java.awt.BorderLayout;
/* w w w  .ja  v  a2 s  .c o  m*/
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.text.BadLocationException;
import javax.swing.text.DefaultStyledDocument;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyleContext;
import javax.swing.text.StyledDocument;

public class Main {
  public static void main(String args[]) throws Exception{
    JFrame frame = new JFrame("TextPane Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);


    StyleContext context = new StyleContext();
    StyledDocument document = new DefaultStyledDocument(context);

    Style labelStyle = context.getStyle(StyleContext.DEFAULT_STYLE);

    Icon icon = new ImageIcon("a.gif");
    JLabel label = new JLabel(icon);
    StyleConstants.setComponent(labelStyle, label);

    try {
      document.insertString(document.getLength(), "Ignored", labelStyle);
    } catch (BadLocationException badLocationException) {
      System.err.println("Oops");
    }

    JTextPane textPane = new JTextPane(document);
    textPane.setEditable(false);
    JScrollPane scrollPane = new JScrollPane(textPane);
    frame.add(scrollPane, BorderLayout.CENTER);

    frame.setSize(400, 450);
    frame.setVisible(true);
  }
}