Introduce to Java

1
Introduce to Java
2
Outline

• History of Java
• Something about Java
• Brief introduction to Java programming
• Java Technologies
• Tools Tips

3
History of Java

• Java technology was created as a programming tool
  in a small, closed-door project in 1991
• But creating a new language wasn't even the point
• In 1991, this new language was called Oak
• The first target of Java was to create an
  interactive environment for digital cable TV. But
  it failed. So it turn to the Internet

4
Something about Java

• Java technology is both a programming language
  and a platform
• The Java programming language is a high-level
  language
• Simple
• Architecture neutral
• Object oriented
• Portable
• Distributed
• High performance
• Interpreted
• Multithreaded
• Robust
• Dynamic
• Secure

5
(No Transcript)
6
(No Transcript)
7
The Java Platform

• The Java platform has two components
• The Java Virtual Machine (Java VM)
• The Java Application Programming Interface (Java
  API)

8
(No Transcript)
9
Editions of Java Tech.

• J2SE (Java 2 Standard Edition)
• Includes basic APIs and runtime
• J2ME (Java 2 Micro Edition)
• A highly optimized Java runtime environment
• Specifically addresses the vast consumer space,
  which covers the range of extremely tiny
  commodities
• J2EE (Java 2 Enterprise Edition)
• J2EE technology and its component based model
  simplifies enterprise development and deployment
• to enable development of secure, robust and
  interoperable business applications

10
The First Step

• Development environment
• J2SDK (1.3 or 1.4)
• Java API doc (Do not try to access it online)
• Runtime environment
• J2RE (Java 2 Runtime Environment)
• Install it if you want to run any java
  application or applet without installing J2SDK
• IDE?
• JBuilder
• NetBeans/Forte
• Eclipse/WSAD
• IntelliJ

11
Java Technologies

• Web
• Applet/Java Web start
• Servlet/JSP
• Enterprise
• EJB (Enterprise Java Bean)
• JMS (Java Messaging Service)
• JDBC (Java database connection)
• Security
• JCE (Java Cryptography Extension)
• JSSE (Java secure socket extension)
• Image, Speech Multimedia
• JAI (Java Advanced Imaging)
• Java 3D
• JMF (Java Media Framework)
• Java Sound API
• Java Speech API

12
JAI

• Function of JAI
• Image I/O
• Color space
• Image Manipulation
• Image Enhancement
• Geometric Image Manipulation
• Image Analysis
• Graphics Rendering (2D)
• Applications of JAI
• Defense and Intelligence
• Geospatial Data Processing
• Document Image Processing
• Bioinformatics
• Applied Research
• Digital Photography
• E-Commerce and Retail Teaching

13
JMF

• The Java Media Framework API (JMF)
• enables audio, video and other time-based media
  to be added to Java applications and applets
• can capture, playback, stream and trans code
  multiple media formats
• Supported Formats
• AIFF
• AVI
• GSM
• HotMedia (IBM)
• MIDI
• MPEG-1 (An MPEG-4 extension is provided by IBM)
• QuickTime (Apple)
• Wave
• AU (Sun)
• RTP H.261, H.263, G.721, G.723

????????
14
Development tools for Java

• Borland JBuilder
• The newest version is 9
• Ease to develop GUI applications in Java
• Commercial product (costs money)
• NetBeans (www.netbeans.org)
• Ease to develop GUI applications in Java
• Free open source
• Eclipse (www.eclipse.org)
• Lacks of visualized GUI design tools
• Ease to management codes projects
• Good integration in embedded tools
• Open Highly extendable
• Free Open source
• Intelli J

15
Tips

• It is a good habit to add JavaDoc comments in
  your codes
• Do not put too many classes into a single source
  file (one source file, one class)
• Make code more reusable
• Think more before you start it
• Do not apply the old function-based thinking to
  your java program

16
References

• Thinking in Java
• http//www.mindview.net/Books/TIJ/
• Home site of Java
• http//www.javasoft.com
• Useful techniques for enterprise java
• http//www.theserverside.com
• Useful open source Java
• http//jakarta.apache.org

Julian Shen ?? ?????