C02: Overview of Software Development and Java

Transcription

1 CISC 3120 C02: Overview of Software Development and Java Hui Chen Department of Computer & Information Science CUNY Brooklyn College 08/31/2017 CUNY Brooklyn College 1

2 Outline Recap and issues Brief introduction to software development process Brief introduction to history of Java Writing simple Java program (from command line) Review concepts of class, object Text-based application user interface Assignments 08/31/2017 CUNY Brooklyn College 2

3 How well am I doing? Check CUNY Blackboard Updated every class to September 14 Peer and random inspections after September 14 08/31/2017 CUNY Brooklyn College 3

4 Attendance A: you arrived on time and signed attendance sheet N: you missed the class L: you signed attendance sheet, but were late X: you were excused with support legitimate documentation 08/31/2017 CUNY Brooklyn College 4

5 Individual Assignment Practice W01-1_08-31 Individual assignment A: Accepted U: Unaccepted, not submitted, or not submitted on time. 08/31/2017 CUNY Brooklyn College 5

6 Practice W01-1_08-31 What shows up in Github classroom? Feedback method Created issues in Github Any problems? Issue type 1: Accepted assignment, but did nothing. I don t even know who you are (unaccepted) Issue type 2: The content of your file is wrong (unaccepted) Issue type 3: You did not create the folder for the assignment (accepted, however, may not in the future) 08/31/2017 CUNY Brooklyn College 6

7 Group Assignment Project 0 Group assignment Letter grade A: may not be perfect, but I am very happy with what you team did. B: at least two members completed something. C: at least one member completed something. F: nothing is done. 08/31/2017 CUNY Brooklyn College 7

8 Project 0 What shows up in Github classroom? Feedback method Created issues in Github Any problems? Issue type 1: some members did not join the team in Github Issue type 2: some members joined, but did not make contribution 08/31/2017 CUNY Brooklyn College 8

9 Questions? Attendance Practice assignment Team Assignment Github issues 08/31/2017 CUNY Brooklyn College 9

10 Suggestion Use Github Issue Tracking in your assignments Practice assignment: manage your own to-do, bugs, and other items Team project: manage to-do, bugs, other items; delegate tasks to members Communicate effectively with the instructor and the fellow team members 08/31/2017 CUNY Brooklyn College 10

11 Communicate Effectively Follow Stack Overflow, 08/31/2017 CUNY Brooklyn College 11

12 Develop Software Applications Apply engineering principles and scientific techniques to software development Software engineering 08/31/2017 CUNY Brooklyn College 12

13 Main Parties in Software Development Two main parties: customers, designers Real word scenarios can be more complicated about who the customers and designers are 08/31/2017 CUNY Brooklyn College 13

14 Software Life Cycle Main activities Requirement analysis Architectural specification Detailed specification Implementation and unit testing Integration and testing Operation and maintenance 08/31/2017 CUNY Brooklyn College 14

15 Waterfall Model Requirements specification Architectural design Detailed design Implementation & unit testing Integration & testing Operation & maintenance 08/31/2017 CUNY Brooklyn College 15

16 Lots of Documentation 08/31/2017 CUNY Brooklyn College 16

17 Software Development Process Waterfall vs. Spiral vs. Agile 08/31/2017 CUNY Brooklyn College 17

18 Validation and Verification Validation Are we building the right product? Verification Are we building the product right? Testing 08/31/2017 CUNY Brooklyn College 18

19 In CISC 3120 Projects The instructor is your customer You and your team members are the designers You deliver a verified product to the customer How does the software life cycle fit in? Learn to design and develop applications in Java 08/31/2017 CUNY Brooklyn College 19

20 Java An Object-Oriented Programming language after C++ Designed for devices, later for the Web Write once, run anywhere Java Virtual Machine (JVM) 08/31/2017 CUNY Brooklyn College 20

21 Writing Java Programs Create Java source code Use a text editor (e.g., notepad) or an IDE (e.g., Eclipse) Compile Java source code to generate Java byte code Use javac to compile the Java source code Run Java byte code in Java Virtual Machine Use java to run the Java byte code program 08/31/2017 CUNY Brooklyn College 21

22 The Hello, World Java Program Create the HelloWorld.java file public class HelloWorld { public static void main(string[] args) { System.out.println( Hello, World ); } } 08/31/2017 CUNY Brooklyn College 22

23 Compile and Run Without using any IDE From the command line: Compile javac HelloWorld.java Run java HelloWorld 08/31/2017 CUNY Brooklyn College 23

24 The Beer Song A little big program that prints out the lyrics of the song 99 bottles of beer. 08/31/2017 CUNY Brooklyn College 24

25 Command Line Arguments What if I want to start at 10 beers? 08/31/2017 CUNY Brooklyn College 25

26 Different iteration mechanisms? 08/31/2017 CUNY Brooklyn College 26

27 Questions? Software development process Write your first Java programs 08/31/2017 CUNY Brooklyn College 27

28 Assignments Practice examples to be posted at the class website 08/31/2017 CUNY Brooklyn College 28