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CSS 161 Fundamentals of Computing Introduction to Computers & Java September 26, 2012

CSS 161 Fundamentals of Computing Introduction to Computers & Java September 26, 2012. Instructor: Uma Murthy CSS SKL 161 A Instructor: Joe McCarthy. Outline. Update / reminder Introduction to Computers Introduction to Java. Updates. Assigned readings

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CSS 161 Fundamentals of Computing Introduction to Computers & Java September 26, 2012

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  1. CSS 161Fundamentals of ComputingIntroduction to Computers & JavaSeptember 26, 2012 Instructor: Uma MurthyCSS SKL 161 A Instructor: Joe McCarthy CSS 161: Fundamentals of Computing

  2. Outline • Update / reminder • Introduction to Computers • Introduction to Java CSS 161: Fundamentals of Computing

  3. Updates • Assigned readings • Any material in assigned readings is potential 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 after each class • Please complete survey by Friday, Sep 28 CSS 161: Fundamentals of Computing

  4. Required Textbook Absolute Java, 5th Edition Walter Savitch & Kenrick MockAddison-Wesley, 2013 4th Edition OK, too CSS 161: Fundamentals of Computing

  5. Supplemental Material (1/2) Java: An Introduction to Problem Solving & Programming, 6th EditionWalter SavitchAddison-Wesley, 2012 http://courses.washington.edu/css161/joemcc/Notes/SavitchCh01.pdf(access via “Notes” link on course homepage) CSS 161: Fundamentals of Computing

  6. Supplemental material (2/2) • Practice It! http://webster.cs.washington.edu:8080/practiceit/ • Instructions to be provided in the coming weeks CSS 161: Fundamentals of Computing

  7. Experimentation via programming “Do not be too timid and squeamish about your actions. All life is an experiment. The more experiments you make the better.” - Ralph Waldo Emerson Corollary: All programs are experiments. The more programs you make the better. CSS 161: Fundamentals of Computing

  8. Other introductory CS courses CSS 161: Fundamentals of Computing

  9. Java • Goal: • Write once, run anywhere • JDK: Java Developers Kit • JRE: Java Runtime Environment • Editions • SE: Standard Edition • EE: Enterprise Edition • ME: Micro Edition (mobile, embedded) • Embedded: flash memory, closed systems • Versions • 1.0 (1992), .. 1.6 (2006), 1.7 (2011) CSS 161: Fundamentals of Computing

  10. Downloading Java [optional] • http://www.java.com/getjava/ • Current: Version 7 update 7 (1.7u7) • On Mac, requires Mac OS X 10.7.3 or higher • Can also use Version 6 update 35 (1.6u35) • http://www.java.com/en/download/manual_v6.jsp • Supported thru February 2013 • We will be writing Java, so we want JDK • Which includes JRE CSS 161: Fundamentals of Computing

  11. CSS 161: Fundamentals of Computing

  12. Integrated Development Environments(IDEs) • Programming tools • Edit text (code) + compile + run • Graphical representations of components • We’ll be using BlueJ, but you can use others bluej.org eclipse.org netbeans.org CSS 161: Fundamentals of Computing

  13. Downloading BlueJ [optional] http://www.bluej.org/download/download.html CSS 161: Fundamentals of Computing

  14. Computers CSS 161: Fundamentals of Computing

  15. Computer Hardware CSS 161: Fundamentals of Computing

  16. Computer Hardware CSS 161: Fundamentals of Computing

  17. Computer Software CSS 161: Fundamentals of Computing

  18. Computer Software CSS 161: Fundamentals of Computing

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

  20. Computer Memory CSS 161: Fundamentals of Computing

  21. Computer Memory Alternate perspectives: Key attributes: addressable / labeled locations that can store things CSS 161: Fundamentals of Computing

  22. Computer Disk(s) CSS 161: Fundamentals of Computing

  23. Computer Disk(s) Alternate perspectives: CSS 161: Fundamentals of Computing

  24. Hierarchy of Memory Variables? [CSS 422 and CSS 430 go into much further depth] CSS 161: Fundamentals of Computing

  25. Hierarchy of Memory • Variables: • Speed • Cost • Size • Volatility [CSS 422 and CSS 430 go into much further depth] CSS 161: Fundamentals of Computing

  26. CSS 161: Fundamentals of Computing

  27. CSS 161: Fundamentals of Computing

  28. CSS 161: Fundamentals of Computing

  29. [In Mac OS X Terminal window] localhost:codeumurthy$ lsFirstProgram* FirstProgram.java localhost:codeumurthy$ javacFirstProgram.java Localhost:codeumurthy$ lsFirstProgram* FirstProgram.classFirstProgram.java Localhost:codeumurthy$ java FirstProgram Hello reader. Welcome to Java. Let's demonstrate a simple calculation. 2 plus 2 is 4 Localhost:codeumurthy$ CSS 161: Fundamentals of Computing

  30. CSS 161: Fundamentals of Computing

  31. Next time • LAB 1 on Friday • Homework 1 handed out on Monday • Console input and output CSS 161: Fundamentals of Computing

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