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Objectives
In this chapter, we present a case study in developing graphical user interfaces (GUI) using the Java Foundation Classes (JFC). We also demonstrate the iterative development process by designing and implementing a graphical drawing pad in successive increments. Two new design patterns, Factory Method and State, are introduced. 

Contents
7.1 Iterative Development
7.2 Iteration 1: A Simple Scribbling Pad
7.3 Iteration 2: The Control Panel
7.4 Iteration 3: The Drawing Tools
7.5 Iteration 4: More Tools
      7.5.1 Handling The Keyboard Input
      7.5.2 Drawing Filled Shapes

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Get all the source files in this chapter (JAR format) 

Compile:

javac *.java

Run the Scribble Pad as an application

java Scribble

Run the Scribble Pad as an applet using the appletviewer

appletviewer ScribbleDemo.html
• Run the Scribble Pad as an applet in your browser (Note: your browser must support Swing 1.1)

Run the Scribble Pad 2 as an application

java Scribble2

Run the Scribble Pad 2 as an applet using the appletviewer

appletviewer Scribble2Demo.html
• Run the Scribble Pad 2 as an applet in your browser (Note: your browser must support Swing 1.1)

Iteration 3: The Drawing Tools

Run the Drawing Pad as an application

java DrawingPad

Run the Drawing Pad as an applet using the appletviewer

appletviewer DrawingPadDemo.html
• Run the Drawing Pad as an applet in your browser (Note: your browser must support Swing 1.1)

Run the Drawing Pad 2 as an application

java DrawingPad2

Run the Drawing Pad 2 as an applet using the appletviewer

appletviewer DrawingPad2Demo.html
• Run the Drawing Pad 2 as an applet in your browser (Note: your browser must support Swing 1.1)