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Chapter 01 Introduction. Course Overview Some Programming ( 程式 ) Languages ( 語言 ) Installation ( 安裝 ) and Use ( 使用 ) of JDK Lectures / Handout Username: [email protected]       Password: AQm65. Teaching ( 教學 ) Style ( 風格 ) in this Class ( 課程 ).

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chapter 01 introduction
Chapter 01 Introduction
  • Course Overview
  • Some Programming (程式) Languages (語言)
  • Installation (安裝) and Use (使用) of JDK
  • Lectures / Handout
teaching style in this class
Teaching (教學) Style (風格) in this Class (課程)
  • Caveat: English (英文) is my secondary (次要的) language (語言).
    • Please raise your hand (舉手) ANYTIME if you have any concerns
  • Motivating examples implemented in Java and demo during the class
    • Bring your textbook or Codes in the computers
  • You practice some exercises during the class (if we have time) and at home
  • Web page: Due date and requirement of homework assignment
  • Learning (學習) Chinese (中文) along the way 
  • Core (核心) of book
    • Program clarity (清晰), using both structured (結構化) and object-oriented (物件導向) programming (程式設計)
  • Big book, cover half, good for future reference
  • Java
    • Powerful, object-oriented language
    • Fun to use for beginners, appropriate for experienced programmers
    • Language of choice for Internet (網際網路) and network (網路) communications (通訊)
live code learning
Live-Code Learning
  • Textbook approach: Use the language to teach the language
  • Learning by examples is the key to rapid mastery
  • Practicing Java regularly is essential for success
  • This book is geared for novice programmers, so the authors stress clarity (清晰)
  • New concepts highlighted in the text and codes
    • Line numbers for the code, easier to refer to in the text
  • Download example programs
    • or Lectures / Handout
programming tips
Programming Tips
  • Good Programming Practices
  • Common Programming Errors (錯誤)
  • Testing and Debugging Tips
  • Performance (性能) Tips
  • Portability Tips
  • Software (軟體) Engineering (工程) Observations
  • Look-and-Feel Observations
two approaches to programming 1 2
Two Approaches to Programming 1/2
  • (1) Structured programming (結構化程式設計)
    • An approach to software development whereby a program is defined as a set of logical processes, which may not be carried out sequentially.
    • By taking the structured approach to programming, developers create software that is efficient in its execution.
    • Structured programming languages are based on functions (函數), subroutines, or procedures.
two approaches to programming 2 2
Two Approaches to Programming 2/2
  • (2) Object-oriented programming (OOP) (物件導向程式設計)
    • Allows a programmer to think modularly because programs are assembled into components called objects.
    • Objects: Building blocks of OOP, are reusable, modular components. An object is a self-contained unit containing functions and attributes.
    • Hardware component
    • OOP builds on and enhances structured programming
programming style
Programming Style
  • Object-Oriented Programming (chapters 3, 8, 9, 10)
    • Java classes (類別) and objects (物件)
    • Program design (設計)
  • Structured Programming (chapters 4, 5, 6)
    • Java class methods (方法)
    • Program implementation (實現)
    • Disciplined approach to writing programs
    • Clear, easy to test, debug (移去錯誤), and modify
c and c
C and C++
  • C: Developed between 1969 and 1973 by Dennis Ritchie at the Bell Laboratories
    • Evolved from BCPL and B
    • Most widely used language among professional software developers for commercial applications
  • Unix
    • 1969 by a group of AT&T employees at Bell Labs
    • First in assembly language, recoded in C in 1973
    • (Berkeley) BSD, (Sun’s) Solaris, Linux, Android
  • (object-oriented programming) C++ evolved from C
    • Developed by (Danish) B. Stroustrup in 1979 at Bell Labs
  • Java evolved from C++, which evolved from C
  • Developed in 1991 for intelligent consumer electronic devices by James Gosling of Sun Microsystems
    • Market did not develop, in danger of being cancelled
  • Internet exploded in 1993, saved project
    • Used Java to create web pages with dynamic content
  • Java formally announced in 1995 by Sun
  • Now used to create web pages with interactive content, enhance web servers, applications for consumer devices (handheld devices, cell phones)...
  • Sun: Part of Oracle
java products groups
Java Products Groups
  • This book is based on Java Standard (標準) Edition (版本) (Java SE) 6, Update 11
    • Develop and deploy Java applications on desktops and servers, as well as in today\'s demanding embedded environments.
  • Java Enterprise (企業) Edition (Java EE)
    • Develop large-scale, distributed networking applications and web-based applications.
  • Java Micro (微小的) Edition (Java ME)
    • Develop applications for small, memory-constrained devices, such as cell phones, pagers and PDAs.
1 10 java class libraries
1.10 Java Class Libraries
  • Java programs
    • Consist of pieces called classes (類別)
    • Classes contain methods (方法), which perform tasks
  • Class libraries
    • Java API (Applications Programming Interface)
    • Rich collection of predefined classes which you can use
    • Have better performance (性能)
    • Improve program portability
    • Download the Java API
what s on the cd rom
What’s on the CD-ROM?
  • What you are required to use:
    • Java SE Development Kit (JDK) 6 Update 11 (jdk-6u11-windows-i586-p.exe), available on CD-ROM (directory software\Sun) 或上網找最新版
    • html/software/install.htm: System Requirements, Running the JDK Installer, Troubleshooting (or Before You Begin in the book)
  • Other stuff (optional):
    • Java integrated development environment (IDE): NetBeans, Eclipse
    • MySQL
setting the path environment variable
Setting (設定) the PATH (路徑) Environment Variable
  • 設定路徑:Use javac, java, … under any directory
    • Windows 2000/Vista/Win 7: 開始 > 設定 > 控制台> 系統> 進階> 環境變數> 系統變數 > Path 下加入 c:\Program Files\Java\jdk1.7.0_45\bin; (說明)
    • 其中的 jdk1.7.0_45 隨您的版本而定
使用 Java 的步驟
  • 打開檔案總管,到達檔案所存放的位置, 按 Shift + 滑鼠右鍵, 選 『在此處開啟命令視窗』
  • File extension .java(a text file)
  • 檔案總管,工具/選項/檢視,隱藏或顯示副檔名
  • C:\> javac
    • 使用編譯器(compiler) javac 編譯,產生 GravityGame.class
  • C:\> java GravityGame
    • 執行 GravityGame.class
typical java development environment 1 2
Typical Java Development Environment (1/2)
  • Development steps
    • (1) Edit (e.g., with Notepad or Emacs) with file extension .java(a text file)
      • 檔案總管 (file manager),工具 (tool) / 選項 (option) / 檢視,隱藏 (hide) OR 顯示 (show up) 副檔名
    • (2) Compile (with compiler (編譯器) javac)
      • Produce bytecodes (位元組碼), understood by Java interpreter, as a file *.class that will be interpreted during the execution phase
typical java development environment 2 2
Typical Java Development Environment (2/2)
  • Run-time steps
    • (3) Load: Class loader (application or applet) takes the .class file and transfers it to memory
      • C:\> java Welcome
    • (4) Verify: Check that downloaded classes are valid and do not violate Java’s security restriction
    • (5) Execute (執行): Bytecodes are executed by the Java Virtual Machine (JVM)
      • Virtual machine: A software application that simulates a computer. Hides the underlying operating system and hardware from the programs that interact with it.
professional conduct
Professional Conduct
  • 50-minute classes with 10-minute break
    • Please handle your personal matter during the breaks.
  • Please do NOT use keyboard or mouse while I am teaching.
    • Hear sound  my voice   sore throat 
    • Way of big-room learning: Some feel easy (review) while some feel difficult (catch up)
  • You are encouraged to discuss with your classmates during practice time.
    • But you need to write your own code. No plagiarism.
    • Please bring your class note and homework handout. And MIND.
  • Method of happy learning
    • Work hard during the class
    • More time to play during your free time