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sfolax6776
Jun 30, 2018

Classes and Objects Lesson 1: Introduction to Object-Oriented Programming

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Edited: Sep 24, 2018

1. Teaser (Kahoot Q1)

2. Flashback:

case 1: ACSL Timesheet (acsl_time sheets_1_jr.doc)

case 2: ACSL ABC (abc_3_jr.docx)

The corresponding code of the two cases are demoed here in Codiva.

 

3. Prompts: in reviewing the code, you might have the following questions.

1. What is an import statement?

2. What are java.io.IOException, java.io.FileReader, Scanner and String?

3. What is a "public class"?

 

4. Clue 1: To answer these questions, let's think about what programming languages are and why we need them in the first place. (Kahoot Q2)

Elaboration 1.1: https://mikkegoes.com/programming-language-paradigm-terms-explained/

Elaboration 1.2: (PPT-L1 Slides 2-8)

Prompts & Check : Some of the reasons why we need object-oriented programming paradigm (Kahoot Q3-7).

 

5. Clue 2 : Key values of OOP

Elaboration 2.1: (PPT-L1 Slides 10-14)

Prompts & Check : Features of object-oriented programming paradigm (Kahoot Q8-13).

 

6. Clue 3: The concepts of classes and objects

Elaboration 3.1: (PPT-L1 Slides 16-25)

Prompts & Check : Definitions of classes and objects (Kahoot Q15-21).

 

7. Clue 4: Examples of classes and objects

Elaboration 4.1: (PPT-L1 Slides 27-29), main() method and some known classes

Prompts & Check : What's next? - more about classes and objects

 

8 Challenges:

  1. Create a class to demonstrate 3 methods of the following classes: String, Math, Integer

  2. Create 2 objects of Scanner class and demonstrate the difference of these two objects.

  3. (Coding Practice): acsl_scrabble

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