Tutorial: компиляция и запуск Java приложения на IPhone



Данное руководство описывает шаг за шагов как использовать установленный на IPhone пакет программ Java. Если вдруг на вашем IPhone еще нет Java, то здесь можно найти описание как это сделать.

Итае нам понадобится работающий jailbrak-нутый IPhone с установленной Java . Я использовал IPhone c последней прошивкой 1.1.4, разлоченной и кастомизированной с помощью winpwn.

Шаг 1: Создаем простое Java приложение, компилируем и запускаем.

  1. Создайте файл Java4IPhone.java с простым hello-world кодом внутри. Я использовал этот код:Create Java hello-world
  2. Загрузите файл в IPhone. Я использовал директорию /tmp. Для загрузки я использовал популярную программу IPhone Browser
  3. Запустите Terminal
  4. Запустите команду java -fullversion или jamvm -fullversion, чтобы проверить доступна ли java
  5. Для вызова компилятора используется команда jikes
  6. Перейдите в директорию /tmp, с помощью команды cd /tmp
  7. Скомпилируйте. Необходимо передать через переменную classpath путь к базовым пакетам java. Если этого не сделать компилятор выдаст ошибку (см. скриншот экрана). Итак для компилящии программы, введите следующую команду:
    jikes Java4IPhone.java -cp /usr/lib/rt.jar
  8. После этого появится новый файл Java4IPhone.class. Для запуска используйте соманду
    java Java4IPhone
  9. Взгляните на иллюстрации. Надеюсь, у вас что-то похожее.

Upload Java application to IPhone

Check Java and Jikes Compile using Jikes Run

Upload Java application to IPhone

Шаг 2: Эксперементируйте, хвастайтесь, получайте удовольствие!

Читайте нас в Твиттере:     

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14 Responses to 'Tutorial: компиляция и запуск Java приложения на IPhone'

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  1. how would you compile using other packages? I'm trying to compile processing, so I need to use the "core.jar"


    Callum Reply:

    Jikes file.java -cp core.jar
    Not sure if that's right, give it a go.



    9 Dec 08 at 8:14 pm

  2. how can i compile java UI Applications with jikes?
    And where can i get documents of the lib jocstrap.jar?



    24 Jun 09 at 11:28 am

  3. I got these when i tried to compile file JavaSysInfo.java:
    E:\javapro>javac JavaSysInfo.java
    JavaSysInfo.java:31: can not file symbol
    symbol: method fullScreenApplicationContentRect()
    location: class obc.UIHardware
    CGRect rect = UIHardware.fullScreenApplicationContentRect();
    JavaSysInfo.java:34: can not find symbol
    symbol: method defaultSize()
    location: class obc.UINavigationBar
    CGSize sizenavbar = UINavigationBar.defaultSize();
    2 errors

    Is it that the jocstrap(jocstrap_1.0.2549-8_iphoneos-arm.deb) I got does not fit the source files?



    24 Jun 09 at 11:36 am

  4. I hope you can help me, well i´ve got every think installed and running but points 7 & 8 are no too clear for my, my file is a .jar one, so i shud´nt compile it, do i? i have tried and nothing, also ia tried to run it by java (filename) but thrn again nothing, im on a 3.1.2 jailbreak os, help me pleas i just want tu run java apps on my Iphone


    soulaway Reply:

    Just try to change current video settings on your device before you do catch such JavaSysInfo.java:31: can not file symbol.



    17 Jan 10 at 10:22 pm

  5. ok, i did it, ;) but... a igot an other prob, when i exec the file becomes a Main-Class on Manifest error, it is a app for a symbian mobile, so, How can i fix this, does anybody knows it? help my pls



    18 Jan 10 at 12:18 am

  6. argh, when will Apple decide to finally accept Java, so we won't have to use these kind of complicated (and borderline) techniques :( ?

    Anyway, to compile and run Java application (with UI, WithRat ;) ) on iPhone, I've tried something called iSpectrum.

    It complies with the iPhone SDK agreement, since you no longer need to install a JVM, but compiles your Java app to native code. So there is no need to jailbreak your phone :) .
    And you develop in Eclipse, with a plugin of their own, and you can even debug your code right from Eclipse Java editor!

    Plus, this is free for open source projects ;) .

    Check it out at http://www.flexycore.com



    19 Feb 10 at 10:55 am

  7. I just can't understand, will this iSpectrum enable opera mini on iphone which is a java application??


    admin Reply:

    this will not make java apps work. as for opera mini, there is opera mini app for iphone



    24 Nov 10 at 4:36 pm

  8. hello...
    how can i run - MRemote.jar ?
    when i open the MRemote.jar with winrar ,it is include this files = a.class,b.class,c.class,d.class,e.class,MRemote.class,MRemote.png and folder META-INF and MANIFEST.MF .

    how can i run - MRemote.jar ?



    admin Reply:

    java -jar?


    mike Reply:

    Hello, I have the same problem. I have a .jar file that was transferred on the jail break iPhone and now i'm trying to install using terminal and when I use the code

    "jikes blooover2.jar -cp /usr/lib/rt.jar" it says "the input file "blooover2.jar" does not have the .java extension


    admin Reply:

    jikes is a compiler, not the runtime. since you have jar file, it is already compiled, you need to run it with java -jar.



    7 Jul 11 at 11:41 pm

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