Jim ConstantineSenior Enterprise ArchitectSun Microsystemsjim.constantine@sun.com

Java Quo Vadis ?

Java Forum Stuttgart1 July 1999

JavaOne 1999

The Numbers:• 21,000 attendees• 669 speakers• 1.7 million Java developers• Java developers will surpass C+

+ developers by 2000• 40,000 Java licensees through

the “Sun Community Source License”

JavaOne Impressions

• Last year “what we will do”• This year “what we did”• Lots of mature products with

mature vendors• More reality and less hype

JavaOne 1999

Cool Stuff• 10,000 PalmVs sold for $199

each to attendees. Pre-loaded with the K virtual machine (J2ME).

• Real-time Java demo by IBM• Jini controlled Lego

Mindstorm robots

JavaOne 1999

Key Announcements• New “Java Editions” J2EE,

J2SE, J2ME.• Roadmap for the next few

releases of Java 2.• Java Community Process.• Misc.

The Old View

The New View

Application Profiles

• A way to add support for domain specific requirements.

• Specifies exactly what support is provided to applications in terms of features, APIs, classes and (optionally) frameworks.

• Test Suite

Java 2 Enterprise Edition (J2EE)

• Current JDK stuff :– CORBA, IIOP, Messaging,

Transactions, RMI, JDBC, JNI, …

• + EJB• + Servlets• + Java Server Pages• New Packaging and

Deployment Ideas

Java 2 Enterprise Edition

Consists of:• J2EE Specification• J2EE Application

Programming Model (best practices)

• J2EE Reference Implementation

• J2EE Compatibility Test Suite

J2EE Concepts

Components: EJBContainers: web, application

– Web for JSP, Servlets– Application for EJBs– XML deployment descriptor idea

extended to support JSP, Servlets, web content

Connectors: for talking to legacy systems such as CICS and SAP

J2EE Deployathon Demo

• Showed the same used car eCommerce application EJB code running without *ANY* changes in:– Oracle App. Server– IBM WebSphere– Netscape NAS– BEA WebLogic– Gemstone J– and others

Java 2 Standard Edition (J2SE)

• What we all think of as the JDK

• Targeted at desktop PCs and workstations

• Next major release will include HotSpot

• Netscape 5.0 will have J2SE built in via OJI and the Plug-in

Java 2 Micro Edition (J2ME)

• Targets high volume consumer devices

• Highly optimized runtime with newly written JVM called K-Java– 40kb in size, with libs 128kb– suited for 16/32b RISC/CISC 16+ Mhz– written with Motorola, 3Com, Bull,

Fujitsu

• Palm V is reference platform• Psion has announced support

Java 2 Roadmap

“Cricket” Release (1.2.2)– due out July 1999– bug fixes

– Plug-in:- RSA signing- HTTPS support- silent install- 50% smaller download (5M)- fixed cookie support

Java 2 Roadmap

“Kestrel” Release (1.2.3)– due out Q1/2000– http 1.1– RMI over IIOP– 25% faster startup– 20% smaller footprint– GUI performance focus– HotSpot for client– Plug-in:

- “sticky applets” and standard extensions

Java 2 Roadmap

Post “Kestrel”– Java 3 ??? Q1/2001– new I/O API– Plug-in

- support for multiple JVMs (not committed)

Java Community Process

• The way by which anyone can contribute to Java

• 20 proposals underway• Audited by the independent

auditing firm of Price-Waterhouse

Java Community Process

Java Specification Requests (JSR): • Orthogonal Persistence• J2EE Connector Architecture• Unified Printing API• Parameterized Types

• See:http://java.sun.com/aboutjava/

communityprocess

HotSpot

• Source will be available via SCSL

• Built in to J2EE• Future releases promise an

additional 40% performance improvement.

Bill Joy Keynote

• Quoted Arthur C. Clarke: “Any sufficiently advanced technology is indistinguishable from magic.”

• Your phone should have common sense reasoning about context: e.g. It should not ring when in a meeting.

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