History of Java [PDF Library]

8/6/2019 History of Java [PDF Library]

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! !! 2003 - 2007 DevelopIntelligence LLC! !http://www.DevelopIntelligence.com

History of Java

Green is in!


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Presentation Topics

In this presentation we will cover:" !History of Java" !What is Java?" !Current State of Java

! 2003 - 2007 DevelopIntelligencehttp://www.DevelopIntelligence.com


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Objectives

When we are done, you should be able to:" !Understand the history of Java" !Provide a description of Java" !Identify and describe the current state of Java

! 2003 - 2007 DevelopIntelligencehttp://www.DevelopIntelligence.com


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History of Java

Can you see the tree in the forest?


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Just a Seed

" !Java started out as a research project" !Research began in 1991 as the Green Project" !Project was chartered to anticipate and plan for next

wave of computing" !Green Team determined consumer devices and

computers would converge" !Team focused on TV set-top boxes and interactive TV

industries

! 2003 - 2007 DevelopIntelligence

http://www.DevelopIntelligence.com


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Only a Sapling

" !Research efforts birthed a new language, OAK" !Created by James Gosling - the father of Java " !Language was created with 5 main goals:

" !It should be object oriented" !A single representation of a program could be executed

on multiple operating systems" !It should fully support network programming" !It should execute code from remote sources securely

" !It should be easy to use" !Oak was renamed Java in 1994




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The Budding Tree

" !Java was publicly released May 27, 1995" !As a product, it was targeted at Internet development" !In general, it was marketed as the language to add

dynamic features to the web, a.k.a. Applets" !Had early support from companies like Netscape

Communications




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What is Java?


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What is Java?

" !Java is defined by two entities:" !A platform (Java Runtime Environment - JRE)" !A language (Java Software Development Kit - SDK)

" !Java address traditional concerns with other programming languages like" !Security" !Reusability" !

Transportability (platform independence)" !Created and maintained by Sun Microsystems




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The Java Platform

" !The Java platform provides" !The run-time environment" !The necessary libraries (platform libraries)

" !The Java platform is NOT platform independent" !Platforms exist for many Operating Systems" !Such as: Windows, Linux, Unix, OS X, VMS




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Platform Editions

" !Java has different platform editions" !Java Standard Edition (Java SE a.k.a J2SE)" !Java Enterprise Edition (Java EE a.k.a J2EE)" !

Java Micro Edition (Java ME a.k.a J2ME)" !Platforms defined in terms of JVM and platformlibraries

" !Each platform has its own set of libraries

" !All editions rely on a Java Runtime Environmentand Java Virtual Machine




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Java SE

" !Complete environment for application execution" !Stand-alone server applications" !Stand-alone client applications" !

Stand-alone client-server applications" !Applets" !Web-start applications - rich applications deployed via

Web" !Considered core to all editions




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Java EE

" !Extension of Java SE" !Uses Java SE run-time environment" !Targeted at enterprise applications; applications

that span all areas of an enterprise" !From customer to back-office" !From web to legacy

" !Enables distributed multi-tier solutions




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Java ME

" !Targeted at consumer and embedded market;constrained devices

" !Two major categories:

" !Connected Device Configuration (CDC)" !Connected Limited Device Configuration (CLDC)




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Current State of Java


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A Growing Forest

" !First release in 1995 was public alpha" !First formal release in January 23, 1996" !Since then, there have been 7 other major

releases" !Current version of Java is Java 6




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Breadth of Java Across Versions



Growth of Java

8 22 5976 135

166 202202

477

1524

1840

2723

3279

3777

0

500

1000

1500

2000

2500

3000

3500

4000

1.0.2 1.1 1.2 1.3 1.4 1.5 1.6Java Version

A m o u n t

PackagesClasses


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Growth of Java Across Versions



Growth of Java

0

275268

129

178

123 122

0

236

319

121

148

120 115

0

50

100

150

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1.0.2 1.1 1.2 1.3 1.4 1.5 1.6Java Version

P e r c e n

t a g e

G r o w

t h

Package GrowthClass Growth


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Summary

" !Java started off as a research project" !The initial release (1.0) of Java contained 8

packages and 202 classes

" !The latest version of Java (1.6) contains 202packages and 3777 classes




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History of Java Resources

" !Web" !Sun Microsystems

" !http://www.java.com/en/javahistory/" !http://www.java.com/en/javahistory/timeline.jsp " !http://java.sun.com/features/1998/05/birthday.html

" !Wikipedia" !http://en.wikipedia.org/wiki/Java_version_history

" !Books" !Hello World(s) -- From Code to Culture: A 10 Year

Celebration of Java Technology; ISBN-10:0-13-188867-6




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About DevelopIntelligence

! "Founded in 2003! "Provides outsourced services to learning

organizations in area of software development! "

Represents over 35 years of combinedexperience, enabling software developmentcommunity through educational andperformance services

! "Represents over 50 years of combined softwaredevelopment experience

! "Delivered training to over 40,000 developersworldwide



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Contact Us

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