Computer Science 120
Introduction to Programming

Spring 2011, Siena College

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Agenda

• Announcements
  • Wrap up laundry lab by Wednesday, any changes determined at the end of class today.
• 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, February 1.

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. BDM Exercise 4.2.2, p. 98.

Examples

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