Simple GUI example and A first look at Packaging

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• except nested class or anonymous inner class created using Adapter class, a class will reside in its own file
• we use directory to orangize file
• Java use package which is a collection of class to orangize class
• hierarchical structure of package name helps ensure the uniqueness of class and package name
• Naming Conventions
• use the following Cutomerized GUI Components as a example
  • CustomFrame.java implements WindowListener to track the closing of the window
  • CustomButton.java a Button with a specific font and colors
  • CustomLabel.java a Label with a specific font and colors
• we write the following application and applet
  • PanelDemo.java An application which uses the CustomFrame and CustomButton
    
    
  • CoffeeShop.java An applet which uses CustomButton and CustomLabel
• note that for the package named custom.container, and custom.component, you must create a directory as follow:
  
• actrually a package is a directory that contains the class file

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