Java Software Platform

7/31/2019 Java Software Platform

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PRESENTATION OUTLINE

A Brief History of Java (Firas)

Javas Architecture (Taiye)

Strengths and Weaknesses of Java (Juliana)

Java and the Developing World (Masum)

The Future of the Java Platform? (Benjamin )

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Java is a programming language and environment invented by James

Gosling and his team in 1994.

The syntax of Java is almost same as C++.

Java is purely Object Oriented programing language and all code is writteninside a class and everything is an object.

Object-oriented programming focuses on the state and behavior ofindividual objects.

Sun Microsystems released the first public implementation of Java as Java

JDK 1.0 in 1995.

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In 1991, Sun Microsystems were

thinking about the future of computing.Their research indicated the next big

thing would be intelligent consumer

devices.

Green Project to create a prototype

for a consumer device.

After 18 months, the Green Projectteam emerged with a device that theycalled Star7. Essentially, it worked like

todays PDA (though it was a lot bigger)and had an animated, color touchscreen.

The USP of Star7 was theprogramming language that made

it work.

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James Gosling, created the language Oak after a large oak tree outside his officewindow.

At the end and during visiting to some coffee they decide to call this languageJAVA (name of kind of caf).

Java finally became the official name. In 1993, when the internet start to gain popularity, the Green Team shiftdevelopment focus to incorporate this.

Why ?

A long list of features makes Java an excellent programming language.

Java can be described as simple, object oriented, interpreted, portable,robust, secure, multithreaded, and high performance.

Beyond this, it also saves time and money and solves some important problems.

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JDK 1.0 (January 23, 1996)(JAVA DEVELOPMENT KIT).

JDK 1.1 (February 19, 1997): Java was largely beingimproved and purified for specific programmability on a computer. Hadearned acceptance in the Internet market.

J2SE 1.2 )(Java Platform, Standard Edition)(December 8, 1998): Java version 1.2 was by far the mostreadily, robust, and stable version of Java and was one the mainreasons for the success of the Java technology.

J2SE 1.3 (May 8, 2000).

J2SE 1.4 (February 6, 2002).

J2SE 5.0 (September 30, 2004) With Java like languages

being built by competitors, Java had to reinvent itself completely (notjust the brand, but the internal workings of its compiler and the JVM) torender it faster than alternatives (Java Development Path. 2012.).

Java SE 6 (December 11, 2006): Involving morecustomers and developers into the development for the focus on both,the brand and the platform, and support for the JAX- WS web servicesstack.

Java SE 7 (July 28, 2011).

javacodespot.blogspot.com/p/java-history.html8
http://javacodespot.blogspot.com/p/java-history.htmlhttp://javacodespot.blogspot.com/p/java-history.htmlhttp://javacodespot.blogspot.com/p/java-history.htmlhttp://javacodespot.blogspot.com/p/java-history.html


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JAVAARCHITECTU

RE

Language

JVM

JAVA API

Class File

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JAVA

ARCHITECTURE

Java VirtualMachine (JVM)

Its a machine on whichall Java programs run

It converts Javabytecode into machinelanguage and executesit.

Found on any Javaplatform.

Java Class File

It can run on anyplatform and OS thathas JVM

Contains everythingJVM needs to knowabout one Java classfile or interface

Function: it helpsmake Java suitablefor networks

Java Language

Excellent language for developing network-based applicationsPromotes the re-use of code resulting in better productivity fordevelopers

Java API

Core functionality of the programming languageOffers a set of classes and interfaces that comes with the JDKFunction: Provides a standard way to access functionalities contained within a code library.11


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JAVA PLATFORMS PERSONALUSE

Java Standard Edition (Java SE)

Includes classes that support thedevelopment of Java web services

Provides the foundation for Java

EE

Java applications that are foundon desktops, servers and real timeenvironments

Java SE 7 is the current version

Java Micro Edition (JavaME)

Has a flexible user interface,security model.

Environment for mobile andembedded devices (mobilephones, PDAs)

Currently running on over 3billion phones and counting.

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JAVA PLATFORMS BUSINESS USE

JavaFX Platform

Easy creation and deployment ofRIA written in JavaFX Script

Serve as clients to Java EEplatform

Java Enterprise Edition (Java

EE)

It helps in developing anddeploying portable, robust, scalable,and secure server-side Java

applications.

Offers a set of classes andinterfaces that comes with the JDK

Provides web services and APIsfor implementing Web 2.0

applications.

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Object-oriented: allows to create modular programs and reuse code(write once, run anywhere)

Platform-independent: compatible with any software, hardware andOS

Secure: e.g safe to allow 3rd party application to run on mobiledevices

Robust: reliable

Multithreaded: perform several tasks

simultaneously

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Performance: perceived to be slow andmemory consuming

Software maintenance and Update systemnot automated unless program initiated, thisoften leaves Java for private users with

security issues.

Not enough applications: lack of effectivebusiness model

Competition: Symbian OS and Linux

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Mobile phone is the only tool poor

have to communicate with outsideworld.

The ability of Java to run on low costmobile phones made it possible toshare the benefit of ICTs with them.

Masawa a Java Application Marketmade it possible to use Java basedapplication for development.

Video Source: http://masawa.org

APPLICATION OF JAVA FOR DEVELOPMENT

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Java has a standardised Run-timeenvironment allowing for

standardised development

This makes it attractive to theopen-source developer.

Recent increase in mobile users

has shifted focus of Java ontomobile code.

New development of mobilefocused projects such as Masawasocially beneficial.

The Java Market

100+ different hardware platformssupported million Java desktop installations

2 million additional downloads per day Used by all of the Fortune 100 companies 5.5 billion Java cards

2.6 billion Java-enabled cell phones 250 partner cell phone carriers 100,000+ Java ME applications

40 million TVs and Blu-ray players

(taken from http://drdobbs.com/jvm/223101669?pgno=1 )

MOBILE APPLICATIONS

Example of Samsung mobile Java platformhome screen, with application icons

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http://drdobbs.com/jvm/223101669?pgno=1http://drdobbs.com/jvm/223101669?pgno=1http://drdobbs.com/jvm/223101669?pgno=1http://drdobbs.com/jvm/223101669?pgno=1http://drdobbs.com/jvm/223101669?pgno=1


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Java has long been integrated

within GIS.

Much of the software designedfor GIScience Applications arewritten in a language compatiblewith the Java platform.

Most notably, python, which isintegrated into the largest of theGIScience software suites ERSIArcInfo.

ArcIMS is a spatial mapping

platform that is combined withAFIRS (automated featureinformation retrieval system)

An example of mobileimplementation is in the USA

where they have introduced agovernment scheme to educatefarmers about irrigationresponses and cropmanagement.

GEOGRAPHIC INFORMATION SYSTEMS

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Recently Sun Microsystems was

acquired by Oracle Corporation

The Oracle corporations history is

mainly focused on Enterprise Softwareand database management systems.

Since ownership change, Oracle hasdiscontinued OpenSolaris, an opensource operating system, andStarOffice

Javas focus on open-sourcedevelopment made it a popular choice inEducational institutions in the past.

Institutions may prefer to use other

platforms such as HTML 5, which havelarge focus on client-orientateddevelopment structures such as ApplesAppStore.

Other predictions about Javas futureinclude the divergence into Enterprisesoftware systems and integration withinoracles existing database products

ORACLE ACQUISITION

Oracle has also filed a lawsuit againstGoogle concerning patents it acquiredfrom Sun Microsystems fordevelopment of their Android Mobile

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Thank you for listening.

Any Questions?

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Java Software Platform