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Tutorial: install and use Java on the IPhone





With this tutorial you will be able to install Java on the IPhone, compile and run simple Java applications using IPhone.

I decided to split this tutorial into two different ones. So here they are:

Have fun and leave comments.




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IPhone's new patent application



patent.jpg

Apple recently filed a new patent application (us20080122796ki). On more than 370 pages lots of new potential features and enhancements for IPhone’s hardware and software are described.

The most interesting Hardware part is a GPS receiver and a camera for video conferencing.

On a software level, Apple describes addition of a text messaging (chat), in-line multimedia content (Quicktime and Flash) in the Safari browser. Further welcome additions described in the publication would include a dedicated blogging client, Java software downloads, MMS picture and video messaging, support for voice-activated commands, audio capture, video conferencing and more.

“[0142]Examples of other applications 136 that may be stored in memory 102 include other word processing applications, JAVA-enabled applications, encryption, digital rights management, voice recognition, and voice replication. ”

It sounds like Apple wants Java to be on the IPhone :-)




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Java VM for IPhone



JamVM is a new Java Virtual Machine which conforms to the JVM specification version 2 (blue book). In comparison to most other VM's (free and commercial) it is extremely small, with a stripped executable on PowerPC of only ~200K, and Intel 180K. However, unlike other small VMs (e.g. KVM) it is designed to support the full specification, and includes support for object finalisation, Soft/Weak/Phantom References, class-unloading, the Java Native Interface (JNI) and the Reflection API.JamVM currently only includes an interpreter (keeps it small). However, the interpreter is highly optimised, and performance is on par with a simple JIT. As most of the code is written in C it is easy to port to new architectures.


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Wednesday, May 28th, 2008. 15:29

JavaOne and Java for IPhone



JavaOne 2008

Here are some extracts from JavaOne 2008 conference press-releases about Java for IPhone:

"To show Java's prominence in multimedia, rock icon Neil Young made an appearance onstage to promote his video and music catalog offering based on Java and Blu-ray technology. A Sun official also briefly commented on Sun's predicament in trying to put Java on the Apple iPhone, leaving the ball in Apple's court to help make that happen."

"During the post-keynote press conference, Green gave a progress report on Sun's ongoing quest to put Java on the iPhone, something that Apple has not publicly, at least, supported.

Sun, Green said, is well along its way in creating the technology to enable Java to run on the phone, Green said. But he deferred to Apple, which governs which platforms can be distributed with the iPhone. It is Apple's right to decide this, Schwartz added."




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Thursday, May 8th, 2008. 17:00

JavaOne 2008 and IPhone-related sessions



JavaOne 2008

JavaOne is one of the most interesting events in IT industry. We are expecting a lot of talks about Java and other technologies. One IPhone+Java - related talk was already mentioned at Java4IPhone.com (link). There are couple more of them.

  • How to Port phoneME™ Advanced Software to Google Android, iPhone, OpenMoko, LiMO, and MoreHinkmond Wong (Sun Microsystems)

    May 07, 14:50 - 15:50

  • Dancing Duke on Your PlayStation Portable: Porting phoneME™ Software to PlayStation Portable Max Mu (Sun Microsystems); Kuo Wang (iaSolution Technology Limited)

    May 08,19:30 - 20:20

  • Extending Swing to Run Multitouch Applications (Multitouch Software)Michael Riecken (Trissential, LLC)

    May 09,16:10 - 17:10

Sessioin details:


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Java "Hello world" continued



Here is a photo of the real IPod (same with IPhone) running a simple Java ME application:

Java on the IPhone




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Monday, April 28th, 2008. 17:25

Java "Hello world" on the IPhone



Hinkmond Wong (Java Micro Edition group at Sun Microsystems) recently published a wonderful screenshot on his blog:

iphone-java-me_sm.jpg

This is the simpliest Java application running on the IPhone simulator. The only thing this application does is it prints "Hello world.". Well done! The whole world is looking forward to see more.




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Tuesday, April 22nd, 2008. 15:13

Cannot create? Convert!



There are two ways to enable Java applications run on the IPhone. The first one is to port Java to IPhone, and this is preferrable :) The second way is to create automatic Java to IPhone porting solution for individual applications.

A company called Innaworks announced an interesting product called alcheMo. alcheMo is an automated system to port J2ME application to a native platform such as BREW and IPhone.

alcheMo technology is basically J2ME to C++ translator and the run-time library. It converts Java application to C++ application, which can be compiled, run and debugged. Using native run-time libraries the native executable is created. The alcheMo run-time library provides equivalent functionality to those associated with J2ME, including support for automatic garbage collection, multi-threading and extensive subsets of CLDC 1.1 and MIDP 2.0, and extension JSRs.

alchemo_workflow_400x207.png

There are several examples of porting games to BREW platform. Hopefully there will be some for the IPhone in the near future. For now alcheMo is in beta state, potential developers are invited to join.

By the way, alcheMo for iPhone supports the accelerometer, the touch screen and other unique iPhone features, through standard MIDP 2.0 API, JSR-256, and, where necessary, extension APIs. If J2ME application uses such APIs, it will automatically and immediately be accelerometer or touch screen capable on iPhone.




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Thursday, April 17th, 2008. 14:10

To be or not to be?



java iphone

We are all waiting too see Java logo on our IPhones. I do too. But... there are obstacles and restrictions. The main point is that Sun really wants see Java on the IPhone. Community wants to see it. Large companies want to be able to create Java based applications. This is a huge market. However there will be probably no Java if Apple doesn't want it to be. That's what I've heard from a vice president of Sun Microsystems. The good news is that Sun wants to be ready with Java for the IPhone in case of everything will go well. So I assume there are investigations and probably some development going on already. And of ofcourse lawers are working hard too :-) .

So what about Apple? Apple will be able to make money with Java. There is a huge market and big money. Enterprise solutions, regular applications and etc. Everybody will benefit from it. We'll see quite soon, what will happen.




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Thursday, April 3rd, 2008. 23:17

Official Sun Microsystems announcement



JavaEric Klein, vice president of Sun Microsystems, Java Marketing anounced that Sun will be developing a Java VM for the Apple's IPhone. This JVM will be based on Java Micro Edition and will allow IPhone to launch thousands of existing and new Java applications. "Once our JVM is on the phone, we anticipate that a large number of Java applications would run on the phone," Klein said. It took 24 hours for Sun to analyze the licence and information Apple had provided with IPhone's SDK. Release date is planned some time after June 2008.

Download the official recordings: audio - mp3 (335 kb), video - mp4 (4.9 mb).




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All possible information regarding Java for the Apple IPhone will be published here. News, updates, rumors and much more about Java and IPhone!




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Saturday, February 16th, 2008. 10:53

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