1 cos 260 day 1 tony gauvin. 2 agenda class roll call instructor introduction instructor’s...

1

COS 260 DAY 1

Tony Gauvin

2

Agenda

• Class roll call• Instructor Introduction• Instructor’s Educational Philosophy • Contract on Classroom Behavior • Syllabus review• Web Resources• General Information about class• Objects and classes

3

Instructor

• Tony Gauvin– Associate Professor of E-Commerce– 218 Nadeau Hall– (207) 834-7519 or Extension 7519– [email protected]

– Quick Resume

mailto:[email protected]

4

Fall Schedule

04/21/23

Tony Gauvin Fall 2015

Monday Tuesday Wednesday Thursday Friday

8:00 AM

8:30 AM

9:00 AM

9:30 AM

10:00 AM Cos 260 Office Cos 260 Office

10:30 AM Intro to Hours Intro to Hours

11:00 AM Programming Programming

11:30 AM CYR 111 CYR 111

12:00 PM 9:30-11:50 AM 9:30-11:50 AM

12:30 PM

1:00 PM

1:30 PM

2:00 PM ELC 200 ELC 200

2:30 PM Intro to eCommerce Office Intro to eCommerce

3:00 PM CYR 111 Hours CYR 111

3:30 PM 2:00-3:20 PM 2:00-3:20 PM

4:00 PM

4:30 PM

5:00 PM 5:30 PM

6:00 PM

6:30 PM

7:00 PM

7:30 PM Office hours are listed

8:00 PM Also available by Appointment

8:30 PM 207 834 7519

9:00 PM [email protected]

9:30 PM

mailto:[email protected]

5

Instructional Philosophy

• Out-Come based education• Would rather discuss than lecture

– Requires student preparation

• Hate grading assignments– Especially LATE assignments

• Use class interaction, assignments, mini-quizzes and Capstone Project to determine if outcomes are met.

6

Cos 260 Outcomes

This course continues from the preliminary introduction to programming that is a core component of the prerequisite COS 111 Introduction to Computer Science course. Upon completion of this course, participants will have gained knowledge of object-oriented and structured programming paradigm concepts, principles, skills (including data type selection and implementation), and the ability to:

• effectively program in depth– effectively apply problem solving techniques to the design of computer algorithm(s) for a

task– select the appropriate programming language(s) for a task– select and implement data type(s) most appropriate for a task (selected from arrays,

records, stacks, queues, lists, simple trees)– test and debug programs– evaluate the quality and efficiency of a program– identify improvements that can be made to the quality and efficiency of a program's source

code and/or documentation• describe key programming concepts, including:

– control structures– recursion– iteration– sorting– searching

• explain key social aspects of programming, including:– intellectual property– liability– privacy– ethical behavior

04/21/23 6

7

Class Documents

• Syllabus• Contract on Classroom behavio

r• Class Slides (whenever IT fixes

server) – http://

perleybrook.umfk.maine.edu/slides/fall2015/COS260/

04/21/23 7

8

Web Resources

• Blackboard – https://www.courses.maine.edu

• Instructor’s Web Site– http://perleybrook.umfk.maine.edu

• Textbook Web Site – http://www.bluej.org/objects-first/

• Java Website (Oracle)– https://www.oracle.com/java/index.html– https://www.java.com/en/

• BlueJ– http://www.bluej.org/

• JGrasp – http://www.jgrasp.org/

• Other Useful Sites– Http://www.javaworld.com

https://www.courses.maine.edu/

http://perleybrook.umfk.maine.edu/

http://www.bluej.org/objects-first/

https://www.oracle.com/java/index.html

9

• 1947 HD FLH “knucklehead”• 2014 Audi R8 (V10+)• 1950 Buick RoadMaster • 1955 Buick Special • 1965 Shelby Cobra S/C 427 • 2013 M/B SLS AMG GT• 2006 Dodge Viper SRT • 2015 Harley CVO Limted• 2015 50th Ann. Mustang• Current Collection

Bribe List

(2015)

Ch 1 -9

5.0

Objects First with JavaA Practical Introduction using

BlueJ

David J. BarnesMichael Kölling

11

Take control of your own learning

• Lectures (boring!) • Exercises take home and in

class • Book• Web page• Discussion forums • Practice, practice, practice!• The only way to learn how to

program is to program! Objects First with Java - A Practical Introduction using BlueJ, © David J. Barnes, Michael Kölling

12

Course Contents

• Introduction to object-oriented programming…

• …with a strong software engineering foundation…

• …aimed at producing and maintaining large, high-quality software systems.

Objects First with Java - A Practical Introduction using BlueJ, © David J. Barnes, Michael Kölling

13

Buzzwords

interface


javadoc

encapsulation

couplingcohesion

polymorphic method calls

inheritance

mutator methodscollection classes

overridingiterators

responsibility-driven design

14

Goals

• Sound knowledge of programming principles

• Sound knowledge of object-orientation

• Able to critically assess the quality of a (small) software system

• Able to implement a small software system in Java


15

Book


David J. Barnes & Michael Kölling

Objects First with JavaA Practical Introduction using BlueJ

5th edition, Pearson Education, 2012ISBN 0-13-249266-0978-0-13-249266-9

16

Course overview (1)

1. Objects and classes2. Understanding class definitions3. Object interaction4. Grouping objects5. More sophisticated behavior - libraries6. Designing classes7. Well-behaved objects - testing,

maintaining, debugging


17

Course overview (2)

8. Structure using Inheritance9. Polymorphism 10.Extendable, flexible class

structures11.Building graphical user interfaces12.Handling errors13.Designing applications


18

Fundamental concepts

• object• class• method• parameter• data type


19

Objects and classes

• objects– represent ‘things’ from the real

world, or from some problem domain (example: “the red car down there in the car park”)

• classes– represent all objects of a kind

(example: “car”)


20 Objects First with Java - A Practical Introduction using BlueJ, © David J. Barnes, Michael Kölling

Class

Object

21

Methods and parameters

• Objects have operations which can be invoked (Java calls them methods).

• Methods may have parameters to pass additional information needed to execute.


22

Other observations

• Many instances can be created from a single class.

• An object has attributes: values stored in fields.

• The class defines what fields an object has, but each object stores its own set of values (the state of the object).


23

State


24

Two circle objects


25

Java Data Types

• Integers int, byte, short and long

• Real numbers float and double• Logic boolean• Character char


26

Source code

• Each class has source code (Java code) associated with it that defines its details (fields and methods).


27

Java Code

• Person person1 = new person();• person1.makevisible();• person1.moveright();• person1.moveHorizontal(50);


28

Return values

• All the methods in the figures project have void return types; but …

• … methods may return a result via a return value.

• Such methods have a non-void return type.

• More on this in the next chapter.


29

Terms for Today

• Object• Class• Instance• Method• Signature• parameter

• Type• State• Source code • Return value• Compiler
