Java Code:
import java.awt.BorderLayout;
import java.awt.Container;

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.SimpleAttributeSet;
import javax.swing.text.Style;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyleContext;
import javax.swing.text.StyledDocument;

public class TextPaneSample {
  private static String message = "In the beginning, there was COBOL, then there was FORTRAN, "
      + "then there was BASIC, ... and now there is Java.\n";

  public static void main(String args[]) {
    String title = (args.length == 0 ? "TextPane Example" : args[0]);
    JFrame frame = new JFrame(title);
    Container content = frame.getContentPane();

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

    Style style = context.getStyle(StyleContext.DEFAULT_STYLE);
    StyleConstants.setAlignment(style, StyleConstants.ALIGN_RIGHT);
    StyleConstants.setFontSize(style, 14);
    StyleConstants.setSpaceAbove(style, 4);
    StyleConstants.setSpaceBelow(style, 4);

    // Insert content
    try {
      document.insertString(document.getLength(), message, style);
    } catch (BadLocationException badLocationException) {
      System.err.println("Oops");
    }

    SimpleAttributeSet attributes = new SimpleAttributeSet();
    StyleConstants.setBold(attributes, true);
    StyleConstants.setItalic(attributes, true);

    // Insert content
    try {
      document.insertString(document.getLength(), "Hello Java",
          attributes);
    } catch (BadLocationException badLocationException) {
      System.err.println("Oops");
    }

    // Third style for icon/component
    Style labelStyle = context.getStyle(StyleContext.DEFAULT_STYLE);

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

    // Insert content
    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);
    content.add(scrollPane, BorderLayout.CENTER);

    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}