COMPE 438 JAVA PROGRAMMING

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COMPE 438JAVA PROGRAMMING

• F. Cemile Serçe

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Syllabus

• Course Goal
• knowledge and skills for object-oriented
  programming using Java
• Reference Books
• Object-Oriented Software Development Using Java
  -- Principles, Patterns, and Frameworks, 
  Xiaoping Jia, 2ed. Addison-Wesley
• Java How To Program 6th ed, by Deitel Deitel
• Object-Oriented Programming in Java, by Martin
  Kalin
• Thinking In Java, by Bruce Eckel
• The Java Tutorial
• many online resources

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Syllabus

• Class Hours
• Thuesday- MF202 - 1130 1320
• Wednesday- MF111 - 1130 1320
• Lab Hours
• 2 hours
• 1 or more lab assignments
• Contact Information
• H-13
• email cemileserce_at_gmail.com
• Grading Strategy
• 40 Final
• 20 Midterm 1
• 20 Midterm 2
• 20 Homeworks, Labs and Quizzes

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Syllabus

• Content Overview
• Introduction to Java Programming
• What Is the Java Technology?
• Java Development Tools and Environment
• First Program in Java Printing a Line of Text
• Introduction to Object-Oriented Programming and
  UML
• Elements of Java
• Classes and Inheritance
• Object-Oriented Application Frameworks
• The Collections Framework
• The Graphical User Interfaces Framework
• The Input/Output Framework
• Multithreading
• Networking
• Accessing Database with JDBC

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This Week

• What Is the Java Technology?
• Java Development Tools and Environment
• Introduction to Object-Oriented Programming and
  UML

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History of Java

• Intelligent consumer-electronic devices, the
  Green Project, Sun Microsystem, 1991
• James Gosling
• C based language
• Oak to Java

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What is Java Technology?

• Programming language
• high-level
• simple, object-oriented and familiar
• architecture neutral and portable
• high performance
• secure
• interpreted, threaded and dynamic.
• Platform
• The Java Virtual Machine
• The Java Application Programming Interface (API)

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How will Java Technology change your life?

• Get started quickly
• Write less code
• Write better code
• Develop programs more quickly
• Avoid platform dependencies with 100 Pure Java
• Write once, run anywhere
• Distribute software more easily
• Security

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Java Standard Class Libraries

• Extensive Standard Class Libraries, known as Java
  APIs (Application Programming Interfaces)
• huge amount of libraries are built-in
• encourage reuse concept which is central to OOP
• improve program performance
• available over the Intenet and the Web
• mostly available at no charge

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Java Standard Class Libraries

• Out of the Box APIs
• Graphical User Interface
• Multithreaded Programming
• Network Programming
• Database Programming
• Encryption / Digital Signatures
• Compression
• Input / Output
• XML Parsing
• Logging
• Collections
• Sound Playing/Recording
• Extension APIs
• Java Media Framework (video streaming, etc.)
• Java Advanced Imaging API
• Speech Synthesis
• Telephony
• TV

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Program Execution Models

• Compilation
• Interpretation

CONVENTIONAL MODELS
COMPILE
source code
machine language
EXECUTION
INTERPRET
source code
EXECUTION
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Java Virtual Machine (JVM)
JAVA PROGRAM EXECUTION
Java compiler
Java source code
byte-code
.class
.java
byte-code interpreter
JVM
EXECUTION
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Basics of Java Environment

• Java programs normally undergo three phases
• Edit
• Programmer writes program (and stores program on
  disk)
• Compile
• Compiler creates bytecodes from program
• Run (VM)
• Load
• Class loader stores bytecodes in memory
• Verify
• Verifier ensures bytecodes do not violate
  security requirements
• Execute
• Interpreter translates bytecodes into machine
  language

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First Program in Java Printing a Line of Text
Program Source Code
Program Output
Hello World
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Compiling the Program

• Open a command prompt window, go to directory
  where program is stored
• Type javac HelloWorld.java
• If no errors, HelloWorld.class created
• Has bytecodes that represent application
• Bytecodes passed to Java interpreter

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Executing the Program

• Type java HelloWorld
• Interpreter loads .class file for class
  HelloWorld
• .class extension omitted from command
• Interpreter calls method main

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JAVA DEVELOPMENT TOOLSAND ENVIRONMENT
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JDK and JRE

• Java Runtime Environment (JRE)
• Java Development Kit (JDK)
• JDK Versions
• JDK 1.0 (January 23, 1996)
• JDK 1.1 (February 19, 1997)
• J2SE 1.2 (December 8, 1998), Playground
• J2SE 1.3 (May 8, 2000), Kestrel
• J2SE 1.4 (February 6, 2002), Merlin
• J2SE 5.0 (September 30, 2004), Tiger
• Java SE 6 (December 11, 2006), Mustang
• Java SE 7 (Estimates 2008), Dolphin

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JDK and JRE

• Java Standard Edition (J2SE)
• J2SE can be used to develop client-side
  standalone applications or applets.
• Java Enterprise Edition (J2EE)
• J2EE can be used to develop server-side
  applications such as Java servlets and Java
  ServerPages.
• Java Micro Edition (J2ME).
• J2ME can be used to develop applications for
  mobile devices such as cell phones

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IDE

• a number of free and commercial IDEs
• Eclipse
• An Integrated Development Environment
• Open source
• Powerful plugin mechanism
• Provides many features to ease Java programming
  (and others, e.g. C/C)
• Editor
• Debugger
• Source Control

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Getting Eclipse

• Download the latest version at
• http//www.eclipse.org/
• You may need to install Java SDK1.6 or JRE

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Installing and Running Eclipse

• Installation is very simple
• Just unpack the downloaded package
• Running Eclipse
• Then click eclipse.exe
• Eclipse will start running if all the
  prerequisites are met

DEMO
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Setting up your workspace

• Workspace is where your projects and programs are
  stored.
• Usually some directory in the file system
• The workspace is set when Eclipse starts
• All code will be saved in this directory

DEMO
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Creating Java Projects

• Demo Creating a project for lecture1 in the
  workspace

DEMO
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Running the code

• Creating java packages
• Adding Java Classes
• Demo Running the code

DEMO