1. Comp Sci 302 Introduction to Programming
Jim Williams, PhD

2. What is Computer Science?
What is Programming?
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

3. 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.

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

5. CS Core Principles:
Algorithms: A step-by-step set of operations to be performed.
Abstraction: a technique for managing complexity.

6. Bloom's Taxonomy of Educational Goals
6. Create: Produce new or original work
5. Evaluate: Justify a stand or decision
4. Analyze: Draw connections among ideas
3. Apply: Use information in new situations
2. Understand: Explain ideas or concepts
Remember: Recall facts and basic concepts
What level is expected in high school, college?
What is required to "get an A"?
What is required in order to teach?

7. Understand vs. Apply Steph Curry, NBA Golden State Warriors
Basketball Analogy
Demonstration vs. Practice
Declarative Knowledge vs Procedural Knowledge
Importance of Practice for learning
Steph Curry, NBA Golden State Warriors

8. Who is in the class?

9. When Women Stopped Coding

10. Education, Race, Women & Computing
Unlocking the Clubhouse
By Jane Margolis and Allan Fisher
Stuck in the Shallow End
By Jane Margolis

11. Memory, Sequence, Assignment
int i;
int j;
i = 5;
j = i;
Briefly Explain
Draw a picture of memory
Walk through
Demonstrate in Java Visualizer

12. What are the values in a, b & c?
int a = 5;
int b = 7;
int c = a;
b = c;
a = b;

13. Swap values in a & b int a = 5, b = 3;
Write code to swap values in a & b.
a = b;
b = a;
c = b;
b = c;
c = a;
a = c;
Google "swapping values without third variable" for many creative ways.

14. Print Out int numCars = 9; int numTrucks = 4;
System.out.print( numCars );
System.out.print( numCars + numTrucks);
System.out.println( "numCars" + numTrucks);
Ask for results
Demonstrate in Java Visualizer

15. Print Out Starting with: int a = 5; int b = 3; Produce output: a has 5
System.out.print(a has 5);
System.out.println(b has 3);
System.out.print(a + " has " + 5);
System.out.print(b + " has " + 3);
System.out.println("a has 5");
System.out.print("b has 3");
System.out.print("a has " + a);
System.out.println("b has " + b);
Starting with:
int a = 5;
int b = 3;
Produce output:
a has 5
b has 3

16. Escape Sequences Special character sequences within a String
\n \" \\ \t
System.out.print( "hello\n\t\"hi\"\ngoodbye");
hello
"hi"
goodbye

17. What is printed out?
System.out.print( "Fred says \"hello\"\nthis morning.");
Fred says "hello"
this morning.
Fred says hello\nthis morning.
Fred says \"hello\"

18. Questions (Degrees Fahrenheit – 32) x 5 / 9 = Degrees Celsius
What symbols have different meanings in Java?
What changes must be made to implement this
equation in Java?
Retrieval practice
importance of committing to an answer

19. Eclipse IDE Opening project, copying in files
Style and Commenting Guides
Strings
I/O
Calling methods
Compiler & Runtime Errors
Scanner reading a number

20. Review (Degrees Fahrenheit – 32) x 5 / 9 = Degrees Celsius
What symbols have different meanings in Java?
What changes must be made to implement this
equation in Java?

21. My List X vs * equals (==) vs assignment (=)
value is stored on the left hand side of assignment (=) operator
Variables:
name areas of computer memory, declare before use, declare type of data, initialize
Variable names:
start with letter, include letters numbers and _, but no spaces
Conventions:
camelCasing, spell out names
Semicolon at the end of statements

22. Read In Values Recall: import java.util.Scanner;
Scanner input = new Scanner( System.in);
int age = input.nextInt();
String name = input.nextLine();
Use print statements to see what is happening as code is executing.

23. What are values of variables?
name: Minsub\n
age: 22\nCS
major:
name: Minsub\n22\CS
age:
name: Minsub
age: 22
String note = "Minsub\n22\nCS";
Scanner input = new Scanner( note);
String name = input.nextLine();
int age = input.nextInt();
String major = input.nextLine();

24. P1 - M0 Available P1 - Individual work Style and Commenting
4 weekly milestones, Due 8am Thursday
P1 - Individual work
Discuss concepts, don’t share assignment code
Style and Commenting