1. CS Programming I
Jim Williams, PhD

2. Comp Sci 200 - Programming I
Who Am I?
What is Computer Science & Programming?
Who is here?
Large Course Overview
Programming Process

3. Who Am I?
My Interests:
CS Education, specifically the teaching and learning of programming.
PhD in Computer Science, minor in Educational Psychology
Husband, Father, Coach, Traveller, ...

4. What is Computer Science?
With a name like computer science, you might think it is all about the computer.
Core principles: Abstractions and algorithms
This course:
Learning to give instructions to the computer.
Read and Write Java

5. What is Computer Science?
The study of the computer itself as well as how computers are applied to solve problems in any field.
What is Programming?
Designing algorithms and writing them in a language a computer can execute.

6. Why Study Computer Science?
To understand our world
To study and understand processes
To be able to ask questions about influences
To use a new form of literacy
A new way to learn science and math
Job skill
Use computers better

7. Enjoyment and Satisfaction
Lots of puzzles, problem solving and challenge
Opportunity to create something from nothing
Opportunity to apply to any field
Many enjoy these aspects of Computer Science and find a lot of satisfaction when successful.

8. Key Concepts Sequence Choice Repetition Delegation Sharing information
information may be an Address
Testing/Verification

9. Programming aka Writing Code
Java is a text language for controlling the computer. Programs are called "code" for a reason.
Decode
"convert (a coded message) into intelligible language." [Google Dictionary]

10. Learning Programming Learn fundamentals of the Java language
Learn key concepts of controlling a computer that are independent of a language.
In other words, learning other similar programming languages will be a bit easier.

11. Who is here?

12. Quality of Writing
Is the quality of an author's writing directly related to how long it took to learn the language they are writing in? (I don't think so…)
It takes people different amounts of time to learn a programming language, but once you achieve fluency, there doesn't seem to be much difference. John Anderson

13. When Women Stopped Coding

14. Course Overview Large Course Learn how to learn programming
Course Website

15. Society of Women Engineers
Not just for women and not just for engineers; all students are welcome. We are especially looking for more computer science students! Emilie Wille

16. Today Course Logistics Learning Expectations: Understand vs Apply
zyBooks Assignments
Getting Help
Lecture Notes
Learning Expectations: Understand vs Apply
Content: Programming Process
Tracing & Explaining (Decoding)
Edit-Compile-Run Cycle

17. Understand vs. Apply Steph Curry, NBA Golden State Warriors
Basketball Analogy
Demonstration vs. Practice
Declarative Knowledge vs Procedural Knowledge
Importance of Practice for learning
If you watch the same video or even 10 different videos on how to shoot a basketball do you get better at shooting a basketball?
Steph Curry, NBA Golden State Warriors

18. Learning Programming Lots of little steps that quickly build
Not mastering little steps creates bigger steps
Goes beyond Remembering and Understanding to Applying, Analyzing, Evaluating and Creating.
Goal: Have basic fluency in Java and be able to solve small problems using it.

19. Tracing & Explaining Tracing
Stepping through a program anticipating what each instruction does and the next instruction to execute (run).
Keep track of what is happening in memory.
Explaining
In your own words, summarize what Java statements do.

20. CS200 View of Computer
A view of the computer appropriate to understand programming with Java.
This view of the computer gets more detailed as we go in the course.

21. CS200 View of Computer Processor Executes program one step at a time.
Java statements say what to do.
Memory
holds data (and program itself)
access through variables and references

22. Learning to Trace with Java Visualizer
Java Visualizer available via our course website or:
import java.util.Scanner;
public class RectangleArea {
public static void main(String [] args) {
Scanner input = new Scanner(System.in);
int height = 0;
int width = 0;
System.out.print("Enter height: ");
height = input.nextInt();
System.out.print("Enter width: ");
width = input.nextInt();
int area = height * width;
System.out.println("A rectangle with height " + height
+ " and width " + width + " has an area of: " + area);
input.close();
return; //optional at end of method, unless returning value }

23. Programming Process Users Files Programmer Editor (Virtual) Compiler
Machine
Compiler
Hello.java
Hello.class
Computer
Files
Programmer

24. Programming Errors Naming/Saving Syntax/Compile time Runtime & Logic
Editor
(Virtual)
Machine
Compiler
Hello.java
Hello.class
Computer
Files
Programmer

25. Programming Process Question
Cat.txt
Cat.java
Cat.class
Cat
For the class named Cat, what is the name of the file that the compiler creates and is provided to the Java Virtual Machine to run?

26. Edit-Compile-Run Cycle
From the command-line:
notepad
javac
java