Exercise #1:  Java Applet, Painting Tool

The goal of this homework is to gain experience in developing user interfaces in Java and Swing.

Develop a simple paint applet that enables users to paint pictures using the mouse.  User required features are:

• painting using a paintbrush tool (by click-and-drag on the painting canvas).
• erasing with an eraser tool (similar interaction to paintbrush, like painting with background color).
• unlimited undo of paint or erase actions.
• controlling the color of the paint for the paintbrush.
• controlling the width of the paintbrush and eraser with a slider.
• clearing the canvas.
• show an "About" popup dialog box that displays your name.

Also, the applet main window containing the paint area must:

• be embedded in a web page, not a popup frame.
• resize to fill the browser when the browser window is resized.
• not lose the current painted picture when browser window is resized or manipulated in any way.

Make a web page that contains the applet.