Chris Eisoldt

Java Systems EngineerSecurity Technologies Ambassador

Developer Support Center

Java – Quo Vadis ?

java.sun.com

Agenda

● Java One News

● J2ME & Java Card

● J2SE & Core Java

● J2EE & Webservices

● Conclusion

Agenda

● Java One News

● J2ME & Java Card

● J2SE & Core Java

● J2EE & Webservices

● Conclusion

Sun Microsystems

Wal-Mart

Exxon Mobil

General Motors

BP

Ford Motor

DaimlerChryslerGeneral Electric

Toyota MotorCitigroup Oracle

ChevronTexaco

Nippon Telegraph & Telephone

Verizon

Deutsche Bank Microsoft

SonyAT&T

Honda Motor

Boeing

Motorola

Vodafone

Home Depot

Bank of America

J.P. Morgan Chase

Merck

Target

UPS

Albertson’s

Walt Disney

Java is in 100% of the Fortune 500

550MDesktops Run Java

Electronic Arts says:

17.6M visitors spend 8.2B minutes playing

Java games

(70 min/user/day)

You Want Volume?

1995 1997 1999 2001 2003

1B1.2B

0

J2EEJ2SEJ2ME

JavaCard

500Java User Groups

Worldwide

Java Developers Are

Everywhere

Apache Software Foundation

Fujitsu Limited

Motorola Oracle

Apple ComputerBank of AmericaBEA Systems

Boeing

Borland

Caldera Systems

Cisco Systems

Compaq

EDS

Ericsson

Hewlett-Packard

IBM Intel

IONA Technologies PLC

MacromediaMatsushita

Nokia Corporation

PalmSource

Philips

Siemens

SAP

Sony

Sun Microsystems

Texas Instruments

661JCP Members

Java Compatibility

Matters

Fujitsu

IONA

Borland

IBM

BEA

ATG

Hitachi

Macromedia

Novell

NEC

Oracle

Pramati

SAP

Trifork

Sun Microsystems

SAS

Sybase

SeeBeyond

SprintSoft

Tmax SoftAplix Corporation

JAMDAT Mobile

Motorola

NTT DoCoMo

NokiaOrange PCS

Panasonic

Research In Motion

Samsung Electronics Corporation

Siemens

Sony Ericsson Mobile Communications

Sprint

Symbian

T-Mobile International

Telefonica Moviles Espana

Vodafone

Java SecurityMatters

Java Compatibility+ Java Security= Java Mobility

Java PoweredAdvertising Campaign

Get Java!

Java.com

Project Rave● Project Rave– Productivity & simplicity

– Drag & Drop layout of user interfaces and component infrastructures

– plus 100% Java

● Availability– Early Access Fall 2003

● To Learn More– http://www.sun.com/software/projectrave

What’s Nextfor Java?

Agenda

● Java One News

● J2ME & Java Card

● J2SE & Core Java

● J2EE & Webservices

● Conclusion

Mobility

21 devices

J2ME Devices

i85s

A009

A 008

I50sxi55rxi80s i95clA388 T720

T280i

A820

V60i V66i

i90c

388c A835 E380I58sr

T725V600 V67TP226

9290

76507210 3410 6310i

5100

3585 3590 6610

7250 610

0

6800

3510i 3650 9210 9210i

8910i

6650

N-Gage

SL45i SL42M50 M46

C55CT56 MT50

S56 S55

I300SCHX250

SCHX350 Rainbow

SCH460

N400 I330

Nexio

S300

SCH-X110SCHX120

SCHX140

SCHX570 SCH

X600SCHX700

SCHX130

SCHX230 SCH

S100SPH

S4209 SO503iClie

P800A3014S SO504i T62U

CX-300L

iBookCnain2000 Ez-X1

5350 Cnain2100 CX300L

G8000 SD1100

SD2100Info

Comm VX1

U10

I90c SE

5100

More J2ME Devices

C452CA Cassiopeia

A3012CA

iPaq

F503is F503i F504i C451HC3001H SH-P300 QCP 6035C3002K

D503i D05 FOMAD2101v D06 Trium

EclipseN503i N503is FOMA

N2002N05 FOMA

N2051N504i N504i

J-K51

P503i P503isFOMA P2101vC3003P J-P51

GD87 P2002

C3011SAJ-SA51

A3011SAA3015SASCP-4900

SH07

Zaurus

SH08SH51 SH09SH5

2

2101V GX10

T06 A3013T C5001TT07

Blackberry5810

Treo 280 i705

Blackberry6510

Blackberry6710

Java Micro Edition

Functionality

June 2003 Spring 2004

JTWI 1.0

JTWI 2.0

CLDC 1.0/1.1

MIDP 1.0/2.0

MMAPI 1.0

WMA 1.0/1.1

Today

JSR 172Web Services

JSR 177J2ME-Java Card

JSR 179Location

Other JSRs

JSR 1843D Graphics

Mandatory APIsWMA 1.1MIDP 2.0CLDC 1.0

Conditional APIsMMAPI 1.1

CLDC 1.1

MandatoryAPIs

ConditionalAPIs

Other J2MEOptional Packages

Other J2METM

Optional Packages

J2METM Virtual Machines

Target System

Mobile phoneCLDC (KVM)Entry-level PDA

Smart card readers -

Game consoleWeb tabletTelematics system

TV set top box -

Desktop workstation -

32-bit ARM processor

Other 16-bit or 32-bit processors

CLDC HotSpotTM

Implementation

High-end PDA & Communicator

CDC HotSpotTM

ImplementationCDC or

PersonalJavaTM

CDCor CLDCJ2SETM

J F M A M J J A S O

CLDC HotSpotTM

J2METM Wireless Toolkit 2.0

Multimedia (JSR 135)

SMS (JSR 120)

User interface (JSR 37, JSR118)

Floating Point (JSR 139)

Web Services (JSR 172)

SIM card access (JSR 177)

Location Based Services (JSR 179)

Already Released

3D Graphics (JSR 184)

Session Invocation Protocol (JSR 180)

Java wireless client platform (JSR 185)

Event Tracking (JSR 190)

Telemetry (JSR 195)

J2METM Wireless Roadmap

Provisioning (JSR 124)

MMS (JSR 205)

K Virtual Machine (JSR 30)

JSR 172: XML Parsing Support

// setup Parser FactorySAXParserFactory spf = SAXParserFactory.newInstance();spf.setValidating(false);

// create the parser instance...SAXParser parser = spf.newSAXParser();

// setup XML input source and parsing event handlerjava.io.InputStream is = getXMLSource();org.xml.sax.helpers.DefaultHandler handler = getDocumentHandler();

// start parsing...parser.parse(is, handler);

JAXP Code Example

Code is identical to that used on J2SE

Web Services Optional Package

● API identical to JAX-RPC 1.0

● Simple and clean

– Hides connection handling, parameter marshalling/un-marshalling, session management

Code Example

// create stub instanceEmployeeDB_Stub stub = new EmployeeDB_Stub();

// set up the stubstub._setProperty(Stub.ENDPOINT_ADDRESS_PROPERTY, serviceURL);stub._setProperty(Stub.SESSION_MAINTAIN_PROPERTY, Boolean.TRUE);

// invoke the remote method 'promoteEmployee'boolean success = stub.promoteEmployee(empName);

Agenda

● Java One News

● J2ME & Java Card

● J2SE & Core Java

● J2EE & Webservices

● Conclusion

72M Java Downloads of the Desktop SDK Since 1999

1999 2000 2001 20020

5

10

15

20

25

4.2

8

19.9

24J2SE SDK

Mill

ions

New

Java Standard Edition

● J2SE –● Web Start (30% faster)● Desktop Integration● Swing look-and-feels– Windows XP– Linux GTK+– Mac OS Aqua– Synth

java.sun.com/j2se/1.4.2

- bug fixes (1.4.1 + 1.4.2)

New

Coming

J2SETM Release Timeline

20032002 2004

“Merlin”1.4

“Tiger”1.5

“Hopper”1.4.1

“Mantis”1.4.2

“Mustang”1.6

“Dragonfly”1.5.1

2005

Hopper & Mantis● 1.4.1 “Hopper”– September 2002

– 2000+ bug fixes

– new parallel & concurrent garbage collectors

– JavaTM plug-in updates (consumer focused)

● 1.4.2 “Mantis”– June 2003

– another 2000+ bug fixes

– new look and feels: Windows XP, GTK+

– startup time and other performance work

1.5 “Tiger”

● Major J2SETM platform update– key Java language updates

● Big Themes:– Quality, Stability, Compatibility!

– Ease of Development

– Monitoring and Manageability

– Performance and Scalability

– Desktop Client

Ease of Development

● Major Theme for J2SE 1.5 (Tiger) & J2EE 1.5

● Language features: Metadata, Generics, Enum, Collections, ..., + API work

● Simple declarations & usage

● Keep the power – enable the tools – up simplicity – Grow Developers

● Project RAVE

Forthcoming Language Features

● JSR-014 Generics

● JSR-175 Metadata

● JSR-201 Remaining language changes– Enhanced “foreach”-style Loops

– Autoboxing/Unboxing

– Typesafe Enums

– Static Imports

– Varargs

For more information: http://www.jcp.org

Generics

● Today: casts, extra parentheses & temporary variables

Compile time type safety – no need to cast!

static void expurgate(Collection c) { for (Iterator i = c.iterator(); i.hasNext(); ) { String s = (String) i.next(); if(s.length() == 4) i.remove(); }}

● Using Generics: clearer and safer

static void expurgate(Collection<String> c) { for (Iterator<String> i = c.iterator(); i.hasNext(); ) if (i.next().length() == 4) i.remove();}

Enhanced for Loop (“foreach”)

● Today: using iterators is error-prone

Easy iterating over collections

void cancelAll(Collection c) { for (Iterator i = c.iterator(); i.hasNext(); ) { TimerTask tt = (TimerTask) i.next(); tt.cancel(); }}

● Using Enhanced for: clearer and safer

void cancelAll(Collection c) { for (Object o : c) ((TimerTask)o).cancel();}

Autoboxing/Unboxing

● Today: ...the pain of converting...

Putting primitives into a collection

public class Freq { private static final Integer ONE = new Integer(1);

public static void main(String[] args) { // Maps word (String) to frequency (Integer) Map m = new TreeMap();

for (int i=0; i<args.length; i++) { Integer freq = (Integer) m.get(args[i]); m.put(args[i], (freq==null ? ONE : new Integer(freq.intValue() + 1))); } System.out.println(m); }}

Autoboxing/Unboxing

● Using generics, foreach and autoboxing:

Putting primitives into a collection

public class Freq { public static void main(String[] args) { Map<String, Integer> m = new TreeMap<String, Integer>(); for (String word : args) m.put(word, Collections.getWithDefault(m, word) + 1); System.out.println(m); }}

Metadata

● Today: paired interface and implementation is required

Example: Simple JAX-RPC Webservice

public interface CoffeeOrderIF extends java.rmi.Remote { public Coffee [] getPriceList() throws java.rmi.RemoteException; public String orderCoffee(String name, int quantity) throws java.rmi.RemoteException; }

public class CoffeeOrderImpl implements CoffeeOrderIF { public Coffee [] getPriceList() { ... } public String orderCoffee(String name, int quantity) { ... }}

Metadata

● Using Metadata: tools can generate text, programmer writes a short annotation

Example: Simple JAX-RPC Webservice

import javax.xml.rpc.*;

public class CoffeeOrder { @Remote public Coffee [] getPriceList() { ... } @Remote public String orderCoffee(String name, int quantity) { ... }}

Huge Performance Gains

● Parallel GC

● Mark Sweep GC

● SSE/SSE2 Support for Intel processors (1.4.2)

● Startup times reduced – for example, Swing 30% reduction

● Swing GUI performance up 50%

● Tuning all over the place!

Continuous Performance Improvement

J2SE 1.2.2 J2SE 1.3.1 J2SE 1.4.2100%

120%

140%

160%

180%

200%

220%

240%

260%

280%

300%

320%

340%

SPECjbb2000 Throughput

1.4.2 Server-side Improvements on x86

Tests run on 4 cpu Pentium 4 @1.6Ghz

SPECjbb2000 Scientific MT Messaging0%

10%20%30%40%50%60%70%80%90%

100%110%120%130%140%150%160%170%180%190%200%

J2SE 1.4.1 Windows

J2SE 1.4.2 Windows

J2SE 1.4.1 Linux

J2SE 1.4.2 Linux

Perf

orm

ance

Nor

mal

ized

to

1.4.

1 W

indo

ws

J2EE Performance Improvements

SPECjAppServer2001 BOPS scores

Dual Node Multiple Node0%

50%

100%

150%

200%

250%

300%

350%

400%

450%

500%

550%

600%

650%

700%

750%

800%

850%

900%

1st Submission

Record

Agenda

● Java One News

● J2ME & Java Card

● J2SE & Core Java

● J2EE & Webservices

● Conclusion

J2EE is Growing More Than 100%

1999 2000 2001 20020

0.5

1

1.5

2

2.5

3

0.0298

0.48

1.3

2.89J2EE SDK

Mill

ions

Java Server Pages 2.0● Designed to make JSP programming

easier

● Expression Languages

– Expressions using JSPs:● <% ((Class) pageContext.get(“MyBean”)).do() %>

– Using Expression Language● ${MyBean.do}

● XML Syntax

● Custom Actions

J2EE 1.4 – EJB 2.1

● EJB™ 2.1 architecture– Web Services

– Timer Service

● Enhancements to:– Message-driven Beans

– EJB™ QL technology

EJB 2.1Integration von Web Services

● JSR-109 defidefines JAX-RPC mapping for stateless session beans as web service endpoints– SOAP stubs are created

at deploy time

– New interface

– Follows JAX RPCsyntax

Agenda

● Java One News

● J2ME & Java Card

● J2SE & Core Java

● J2EE & Webservices

● Conclusion

Duke's Choice Awards

Presented to: MARS ROVER

JAVA ROCKETSCIENCE AWARD

christian.eisoldt@sun.com

PEACE!