ch02/applet/RectangleApplet.html
 <applet code=RectangleApplet.class width=300 height=400>
 </applet>
f you know HTML, you can proudly explain your creation, by adding text and more HTML tags:
h02/applet/RectangleAppletExplained.html
 <html>
 <head>
 <title>Two rectangles</title>
 </head>
 <body>
 <p>Here is my first applet:</p>
 <applet code=RectangleApplet.class width=300 height=400>
 </applet>
 </body>
 </html>