Enabling the Mobile Web with JavaME Nandini Ramani Co-Chair W3C SVG - - PowerPoint PPT Presentation

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Enabling the Mobile Web with JavaME Nandini Ramani Co-Chair W3C SVG - - PowerPoint PPT Presentation

Mar 30, 2024 33 likes •269 views

Enabling the Mobile Web with JavaME Nandini Ramani Co-Chair W3C SVG WG Senior Staff Engineer Sun Microsystems, Inc. Akhil Arora Senior Staff Engineer Sun Microsystems, Inc. Agenda Web 2.0 Web Services Rich UI Demos

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Enabling the Mobile Web with JavaME

Nandini Ramani

Co-Chair W3C SVG WG Senior Staff Engineer Sun Microsystems, Inc.

Akhil Arora

Senior Staff Engineer Sun Microsystems, Inc.

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Sun Microsystems 2006

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Agenda

  • Web 2.0
  • Web Services
  • Rich UI
  • Demos
  • Questions
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Age of Participation

Google Maps Flickr Albums Salesforce

Community & Interaction

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Mobile Drives the Next Wave

Content Management Entertainment Gaming

Communications

Information Sharing

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Your Personal Dashboard

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Web Services

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What are Web Services?

  • www for machines

> designed for machine-to-machine interactions over a network > Heterogeneity is a given > networking, not presentation

  • two styles

> REST > Yahoo, Google, Amazon, Microsoft Live, Most Web 2.0 > SOAP > eBay, B2B applications

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Why Mobile Web Services?

  • Compelling Web Services drive ARPU via data
  • Java tools exist to make it easy for developers to build web

applications and mashups in Java

  • Mobile AJAX in browser has limitations

> substantial JavaScript download > application source code (JavaScript) visible > network availability/latency makes user experience spotty > cannot use camera, 3D, bluetooth, local calendar & addrbook, etc

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Java - Powerful Enabling Technology

  • Java Platform

>Ubiquity: Java is on 1.2 Billion Phones >Superior code development tool chain >Broadest access to phone features >Robust, secure, high performance environment >Portability

  • Based on Open standards

>JCP and W3C >Leverages popular Web model (XML, DOM) >Rich user experience with SVG/CDF

  • Leverage multiple developer communities: graphic artists and

Java developers

* SVG = Scalable Vector Graphics, a W3C specification * CDF = Compound Document Format, a W3C specification

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Some Use Cases for Mobile Web Services

  • Mobile Feeds

> catching up with blogs offline > liveblogging, lifeblogging > syndication of calendar, traffic, jobs, weather...

  • Mobile Web 2.0

> maps, traffic, directions, location... > shopping, pricing, reviews, yellowpages... > audio, video, photos, tagging, social networking... > travel, finance... > verticals > mashups

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Demos (1/2)

  • Feed Reader
  • Local Search using Yahoo!'s Local and Map Web Services
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Presentation

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Opening the Phone to the Developer

New Java Standards defining next-gen wireless platform Mobile Services Architecture (MSA) Enables the development of services based on previously closed device capabilities SMS / MMS Location PIM 3D Graphics Bluetooth 2D Graphics Media SIP

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JSR-226 Overview

  • Java API to draw, manipulate and animate SVG

Tiny 1.1 content

  • Part of Mobile Service Architecture (JSR-248), both

the core subset and the full version

  • Rich UI through SVG
  • Complex behavior through Java
  • DOM API connects SVG and Java
  • Enables significantly richer UI than LCDUI alone
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JSR 226 Application Model

svg image g text rect circ

Document Object Model

Java Application

<svg width="2cm" height="3cm" viewBox="0 0 200 300"> <g> <rect x="10" y="10" width="180" height="280" fill="none" stroke="black"/> <circle cx="100" cy="150" r="100" fill="rgb(255,209,31)"/> </g> <image xlink:href="duke.svg" x="40" y="40" width="120" height="220" /> <text x="100" y="280" font-size="30" text-anchor="middle"> Hello SVG! </text> </svg>

SVG Document Rendering & interactivity

load render manipulate UI events

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JSR 290 and CDF

  • Java Language and XML UI Markup Integration

>Leverage W3C CDF (WICD MP) >Integration with Web technologies

– XHTML Basic 1.1 – ECMAScript CP – CSS 2.1 Mobile – SVG Tiny 1.2

>Binding between markup and Java code >Connection between ECMAScript and Java

* ESMP = ECMA Script Compact Profile, a subsetted version of ECMA Script used in Mobile phone * CSS Basic = Cascading Style Sheets, a popular styling language helping separate the content of XHTML pages from their appearance

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Unleash Your Creativity

Create Integrate Deploy

XML application

DEVELOPMENT & AUTHORING TARGET DEVICE

Integration Tool MIDlet XML UI API Java VM

XML Engine

Markup Java Code

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Demos (2/2)

  • Contact List demo
  • Location based service
  • Tools
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We've Done it Before... ...And We're Doing it Again

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What's Next: Open Sourcing Java

Java ME & Java SE

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References

  • JCP: http://jcp.org/en/home/index
  • SVG: http://www.w3.org/Graphics/SVG/
  • CDF: http://www.w3.org/2004/CDF/
  • NetBeans: http://www.netbeans.org/
  • Wireless Toolkit:

http://java.sun.com/products/sjwtoolkit/

  • Community: http://www.java.net
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Discussion Topics

  • Reduce Fragmentation

> Conformance test suites

  • Collaboration between standards bodies

> W3C, JCP

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Thank You!

Nandini Ramani

nandini.ramani@sun.com

Akhil Arora

akhil@sun.com