Session Details

Week 1, Session 3 — Thu Mar 10

Reading

1. Big Java, §2.8–2.10
2. First two pages of this intro to UML Class Diagrams
3. Big Java, §3.1–3.8, Pay particular attention to §3.8

HW Due

1. HW 2

Topics

1. Unit tests with JUnit
2. Object references
3. Object-Oriented Encapsulation
4. Implementing Classes in Java
   • Fields, Constructors, Methods
   • Implementing an Interface
   • Documented Stubs
   • Test-first Programming, JUnit tests

Resources

1. Slides

Outline

1. [5] Questions
2. [5] Javadoc Recap
3. [15] Unit testing with JUnit. Examine JUnitMoveTester in JavadocsAndUnitTesting project.
4. [20] JUnit exercise: create and implement StringMethodsPracticeTest in JavadocsAndUnitTesting project.
5. [10] Object references, assignment, box and pointer diagrams
6. [5 min] OO encapsulation
7. [5 min] Break
8. [15 min] Java classes. Live coding on implementing a class: implement Shouter and add a test to ShouterTest in the WordGames project, as specified in the WordGames instructions.
   • Fields, Constructors, Methods
   • Overloading
   • Visibility (public, private)
   • Public Interface vs. Private Implementation
   • The this Keyword: Implicit vs. Explicit Parameters
   • Fields vs. Parameters vs. Local Variables
   • Implementing an Interface
   • Using Documented Stubs
   • Test-first Programming, JUnit tests
9. [15 min] More live coding on implementing a class: implement Censor and add a test to CensorTest in the WordGames project, as specified in the WordGames instructions.
   • Fields: when you need one, how you declare one, how you initialize one
   • Constructors: writing and calling
10. [10 min] Begin homework (continue working per the WordGames instructions).

HW Assigned

1. HW 3