Topics for the Week of Feb 4

Reading: Chapter 3

• Quiz on Thur. Know:
  • Material from last quiz
  • Patterns:
    • guarded command pattern (if statement)
    • alternative action pattern (if-else if -else,…)
    • sentinel loop pattern (while statement)
    • counter loop pattern (while plus counter)
• Lab Reminder
  • Lab 2, part 2 must be demonstrated ( 6 or 8, and 7) by the end of this week.
  • Lab 2, part 2 code must be submitted Wed of this week. (submit instructions)
• Review:
  • Declaring and Creating Objects
  • Inheritance
  • Understanding Applets: init, start, paint, stop, destroy
  • import statement
• Applets
  • Colors on the Computer
  • Using the paint Method to make pictures. Coordinate System. Example: circles, filled circles, snowman, etc
• Exchanging of Information
  • Example 1, 2
  • Example 3, 4
• Writing Your Own Class
  • Syntax of a Class: class keyword, member variables, accessor variables, other methods
  • Example:
    • Create The Circle Class. Test it in the Applet.
    • Use inheritance to extend the Circle class to create theThe Filled Circle Class. Test it in the Applet.
    • Create a Snowman Class that contains 3 FilledCircle Objects. Test it in the Applet.
    • Create several Snowmen objects in the Applet class.
    • Add a button to move the Snowmen.

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