CSS 161 Fundamentals of Compu3ng. Introduc3on to Computers & Java September 26, Instructor: Uma Murthy CSS SKL 161 A Instructor: Joe McCarthy

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1 CSS 161 Fundamentals of Compu3ng Introduc3on to Computers & Java September 26, 2012 Instructor: Uma Murthy CSS SKL 161 A Instructor: Joe McCarthy

2 Outline Update / reminder Introduc3on to Computers Introduc3on to Java

3 Updates Assigned readings Any material in assigned readings is poten3al fodder for exams, regardless of whether we cover it in a lecture, lab or assignment Slides will always be posted on web site Typically, shortly amer each class Please complete survey by Friday, Sep 28

4 Required Textbook Absolute Java, 5 th Edi3on Walter Savitch & Kenrick Mock Addison- Wesley, th Edi3on OK, too

5 Supplemental Material (1/2) Java: An Introduc3on to Problem Solving & Programming, 6th Edi3on Walter Savitch Addison- Wesley, 2012 hzp://courses.washington.edu/css161/joemcc/notes/ SavitchCh01.pdf (access via Notes link on course homepage) CSS 161: Fundamentals of Compu3ng

6 Supplemental material (2/2) Prac3ce It! hzp://webster.cs.washington.edu:8080/prac3ceit/ Instruc3ons to be provided in the coming weeks

7 Experimenta3on via programming Do not be too 3mid and squeamish about your ac3ons. All life is an experiment. The more experiments you make the bezer. - Ralph Waldo Emerson Corollary: All programs are experiments. The more programs you make the bezer.

8 Other introductory CS courses

9 Java Goal: Write once, run anywhere JDK: Java Developers Kit JRE: Java Run3me Environment Edi3ons SE: Standard Edi3on EE: Enterprise Edi3on ME: Micro Edi3on (mobile, embedded) Embedded: flash memory, closed systems Versions 1.0 (1992), (2006), 1.7 (2011)

10 Downloading Java [op3onal] hzp:// Current: Version 7 update 7 (1.7u7) On Mac, requires Mac OS X or higher Can also use Version 6 update 35 (1.6u35) hzp:// Supported thru February 2013 We will be wri3ng Java, so we want JDK Which includes JRE

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12 Integrated Development Environments (IDEs) Programming tools Edit text (code) + compile + run Graphical representa3ons of components We ll be using BlueJ, but you can use others bluej.org eclipse.org netbeans.org

13 Downloading BlueJ [op3onal] hzp://

14 Computers

15 Computer Hardware

16 Computer Hardware

17 Computer SoMware

18 Computer SoMware

19 Note: program must be loaded into memory in order to execute CSS 161: Fundamentals of Compu3ng

20 Computer Memory

21 Computer Memory Alternate perspec3ves: Key azributes: addressable / labeled loca3ons that can store things

22 Computer Disk(s) CSS 161: Fundamentals of Compu3ng

23 Computer Disk(s) Alternate perspec3ves:

24 Hierarchy of Memory Variables? [CSS 422 and CSS 430 go into much further depth]

25 Hierarchy of Memory Variables: Speed Cost Size Vola3lity [CSS 422 and CSS 430 go into much further depth]

26 CSS 161: Fundamentals of Compu3ng

27 CSS 161: Fundamentals of Compu3ng

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29 [In Mac OS X Terminal window] localhost:code umurthy$ ls FirstProgram* FirstProgram.java localhost:code umurthy$ javac FirstProgram.java Localhost:code umurthy$ ls FirstProgram* FirstProgram.class FirstProgram.java Localhost:code umurthy$ java FirstProgram Hello reader. Welcome to Java. Let's demonstrate a simple calculation. 2 plus 2 is 4 Localhost:code umurthy$

30 CSS 161: Fundamentals of Compu3ng

31 Next 3me LAB 1 on Friday Homework 1 handed out on Monday Console input and output