Download Introduce to Java

Introduce to Java
Outline
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History of Java
Something about Java
Brief introduction to Java programming
Java Technologies
Tools & Tips
History of Java
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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
Something about Java
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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
The Java Platform
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The Java platform has two components:
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The Java Virtual Machine (Java VM)
The Java Application Programming Interface
(Java API)
Editions of Java Tech.
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J2SE (Java 2 Standard Edition)
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J2ME (Java 2 Micro Edition)
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Includes basic APIs and runtime
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)
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J2EE technology and its component based model
simplifies enterprise development and deployment
to enable development of secure, robust and
interoperable business applications
The First Step
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Development environment
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Runtime environment
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J2SDK (1.3 or 1.4)
Java API doc (Do not try to access it online)
J2RE (Java 2 Runtime Environment)
Install it if you want to run any java application or applet without
installing J2SDK
IDE?
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JBuilder
NetBeans/Forte
Eclipse/WSAD
IntelliJ
Java Technologies
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Web
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Enterprise
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EJB (Enterprise Java Bean)
JMS (Java Messaging Service)
JDBC (Java database connection)
Security
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Applet/Java Web start
Servlet/JSP
JCE (Java Cryptography Extension)
JSSE (Java secure socket extension)
Image, Speech & Multimedia
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JAI (Java Advanced Imaging)
Java 3D
JMF (Java Media Framework)
Java Sound API
Java Speech API
JAI
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Function of JAI
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Image I/O
Color space
Image Manipulation
Image Enhancement
Geometric Image Manipulation
Image Analysis
Graphics Rendering (2D)
Applications of JAI
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Defense and Intelligence
Geospatial Data Processing
Document Image Processing
Bioinformatics
Applied Research
Digital Photography
E-Commerce and Retail Teaching
JMF
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The Java Media Framework API (JMF)
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Supported Formats
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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
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 …
視訊會議壓縮標準
Development tools for Java
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Borland JBuilder
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NetBeans (www.netbeans.org)
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Ease to develop GUI applications in Java
Free & open source
Eclipse (www.eclipse.org)
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The newest version is 9
Ease to develop GUI applications in Java
Commercial product (costs money)
Lacks of visualized GUI design tools
Ease to management codes & projects
Good integration in embedded tools
Open & Highly extendable
Free & Open source
Intelli J
Tips
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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
References
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Thinking in Java
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Home site of Java
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http://www.javasoft.com
Useful techniques for enterprise java
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http://www.mindview.net/Books/TIJ/
http://www.theserverside.com
Useful open source Java
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http://jakarta.apache.org
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