Computer Science 120
Introduction to Programming

Spring 2012, Siena College

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Agenda

• Announcements
  • Textbook status?
• Lab discussion
  • Look at the grading sheet: "Appropriate Comments", "Good Variable Names", "Appropriate formatting" are worth as much as the correctness for the first two parts!
  • Use BlueJ's "Auto-layout" tool - you should never lose a formatting point
  • Ways to approach finding the correct basket
• Programming Project 1
• Java naming conventions
  • class names: capitalize, if made up from more than one word, capitalize each word. e.g., TouchyWindow, FramedRect, Color.
  • instance variable and method names: lower case, if made up from more than one word, capitalize all but the first word. e.g., onMousePress, laundry, littleRedCircle.
  • named constants: all caps, if made up from more than one word, separate words by underscore characters. e.g., BALL_DIAMETER, VELOCITY, START_X.
• Working with colors
  • custom colors
  • random colors
• Dragging graphical objects

Lecture Assignment 4

Due at the start of class, Tuesday, January 31.

Please submit answers to these questions either as a hard copy (typeset or handwritten are OK) or by email to jteresco AT siena.edu by the start of class. Please use a clear subject line when submitting by email (e.g., CS 120 Lecture Assignment 4, Joe Student). We will discuss these questions at the start of class, so no late submissions are accepted.

1. BDM Exercise 3.7.1, p. 78 (2 points).
2. BDM Exercise 4.2.2, p. 98 (4 points).

Examples

• ColorfulSpirograph
• MoreColorfulSpirograph
• CrazyColorfulSpirograph
• UglyDragABall
• DragABall
• Basketball