Lecture 11 - February 15, 2007

 

Reminder:  Exam next Thursday

                   Review: lectures notes, labs, programs, slides, textbook

 

Bring questions from notes, labs, programs, slides, text to class on Tuesday  (else I'll soldier on with Inheritance).

 

Discussed           

Lab 9  -- showed code and questions

·        Illustrated that relational operators don't just work with numbers, they work with characters

TestChar

·        Pointed out that when comparing elements of wrapper class Boolean use  compareTo

TestBoolean

·        Pointed out that variables of primitive type boolean  can only be tested for equality (= =) but not for <, >, >=, <= because they are not ordered.

 

Slides

 

Links to code examples: 

As usual as .txt files

Please see notes in slides to see which correspond to which slides

            SuperClass1

            SubClass1

            ConstructorDemo1

 

            SuperClass2

            SubClass2

            ConstructorDemo2

 

            SuperClass3

            SubClass3

            ShowValueDemo

 

Please remind me to discuss significant uses for Enum classes!