ez-java(tm) platform

1
ez-java(tm) platform

• 2000. 10. 12
• ? ? ?
• (jypark_at_lgtel.co.kr)
• ?????, LGTeleCom

2
Mission

• ????? ????? ?? ??
• Download, Install, Upgrade
• ?? WAP ???? ??? ??? ??
• WAP ????? ??
• ???? ??? ??? ????? ??
• ??? ?????? ?? ??
• ??, ???? ???
• ???? ??
• ???... JAVA

3
ez-java ??? ???
?? ??? ???
Access Layer CDMA, SMSC
IWF
Java HDML Content Server
Up.Link
Java Game/Appication Server
ez-i(tm) ??? ???
Billing Proxy
Java HDML Content Server
Java Game/Application Server
4
???? ??

• i-book ??
• Qualcomm MSM 3100
• 4MB FlashMemory/512KB StaticRAM
• 128x128 px, 2bit gray scale LCD
• network speed 64Kbps

5
????? ??

• KVM code size 230 KBytes
• KVM heap space 108 KBytes
• Java Application Storage 64 KBytes x 10
• Java 2 Plaftform Micro Edition, CLDC profile
• KittyHawk User Interface API
• Font ?? 10x12, ?? 5x12
• HTTP 1.1 ?? JAM? JAR ?? ????

6
Java application ?? ??
7
Descriptor or JAM file

• Application-Name JAM ??? ?? ??
• Application-Version ?????? ??
• Application-Creator ??? ?? ??
• Main-Class ?? ???? ??
• JAR-File-URL ??????? URL
• JAM-File-URL JAM ??? URL
• JAR-File-Size ?????? ?? ??
• ScratchPad-Size ??? ?? ??? ??

8
Java application ??

• Maximum number of applications 10?
• ScratchPad size 1KB
• Application-Version xxx.yyy.zzz
• ???? ?? ???? ??? ??? ???? ?????? ??

9
JAM ?? URL ??

• DEVICE extension ??
• ?) devicejam?urlhttp//210.219.29.230/java/jam/k
  halerttest.jam
• JAM? ?? ?? ?, HTTP ????? ???? JAM ??? ????

10
HDML JAM sample

• - HDML sample
• ltHDML VERSION3.0 TTL0 MARKABLETRUE
  PUBLICTRUEgt
• ltCHOICEgt
• ltCE TASKgo
• DEST"devicejam?urlhttp//210.219.29.230/
  java/jam/khalerttest.jam"gt KHAlertTest
• ltCE TASKgo
• DEST"devicejam?urlhttp//210.219.29.230/
  java/jam/giftest2.jam"gt GifTest
• ltCE TASKgo
• DEST"devicejam?urlhttp//210.219.29.230/
  java/jam/sm.jam"gt SeoulMap
• lt/CHOICEgt
• lt/HDMLgt
• - JAM sample
• Application-NameTumbleDuke Sample
• Application-Version3.1
• Application-CreatorLG Telecom
• Main-ClassTumbleDuke
• JAR-File-URLhttp//210.219.29.209/java/jar/tumble
  duke.jar
• JAM-File-URLhttp//210.219.29.209/java/jam/tumble
  duke.jam

11
com.lgtelecom.hw.IBook

• void placeCall(String phoneNumber)
• void playBeep(long tone, long duration)
• void backLight(long duration)
• void vibrator(long duration)
• int getNID()
• int getSID()
• int getBASEID() ????
• int getBASELAT()
• int getBASELONG()

12
com.sun.kh

• Interface
• Listener, TimerClient
• Classes
• Bitmask, Canvas, DataPresenter, Date, Display,
  Event, Font, GeneralListener, GifImageDescriptor,
  GifReader, Graphics, Image, IO, KH, KHApp, List,
  Progress, Screen, Sequence, Test, TextBox,
  TextPair, Ticker, TimerService

13
GIF image handling

• public static final byte gifdata ...
• ByteArrayInputStream is new ByteArrayInputStream
  (gifdata)
• GifReader reader new GifReader()
• try
• if (reader.readHeader(is, null) 0)
• gif reader.readImage()
• catch (Exception e)
• ...
• ...
• g.drawImage(0, 0, 0, gif.image, g.TRANSPARENT)

14
ez-java(tm) ??? ???

• ???? JAM ??? ??
• ???? ?? ?? ez-i(tm) ???? ??
• ????? Java ?????? ??

15
?? ???? ??? ??

• URL ?? ??? ???? ?????? ??

16
Possible Application

• ?? ??
• ???? ???
• ??? ?? ???
• ???? ?? ???

17
Roadmap on ez-java
18
?? ???

• http//java.ez-i.co.kr

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Future...

• Java Application Streaming
• ??? ???? ?? ??? ??, dynamic?? ????
• ?? ?? main class ?? ??
• ????? ?? ?? ??
• code-size? ? Java application ?? ??
• Color LCD ??
• KVM? ?? ?? ? ???
• HTTPS ??