Re: [xmlvm-users] Problem with Cross Compilation using XMLVM

[Markus N. <mar...@gm...>]

Hi John,

Several issues with what you are trying to achieve:

1. For the out of memory exception just add increase the heap space of the
vm like this:
java -Xmx 2G -jar xmlvm.jar --in=/HelloWorld.class --target=iphone
--iphone-app=TheApplication

2. If you want to cross-compile to the iPhone you can't just simply use a
Java program with a main
method as entry point but you will have to extend UIApplicationDelegate
instead. Check out the tutorial
under http://xmlvm.org/tutorial/ which steps you through creating a simple
HelloWorld and also
includes a ton of other example apps

Cheers,
Markus

On Wed, Sep 5, 2012 at 8:47 AM, John Tan <joh...@ho...>wrote:

>  Dear Arno,
>    I am having problems trying to compile a my HelloWorld.class file to
> Objective C code.
>
> The Java code that I generate my class file with is as shown below:
>
> public class HelloWorld {
>
>     public void HelloWorld() {
> System.out.println ("Hello World!");
>     }
> }
>
> In my Mac OS Terminal, I type:
>
> java -jar xmlvm.jar --in=/HelloWorld.class --target=iphone
> --iphone-app=TheApplication
>
> (xmlvm.jar file has been generated.)
>
> However I get this compilation error message:
>
> Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
> at java.util.Arrays.copyOf(Arrays.java:2786)
> at
> java.io.ByteArrayOutputStream.toByteArray(ByteArrayOutputStream.java:133)
> at
> com.simontuffs.onejar.JarClassLoader.alreadyCached(JarClassLoader.java:796)
> at com.simontuffs.onejar.JarClassLoader.loadBytes(JarClassLoader.java:509)
> at
> com.simontuffs.onejar.JarClassLoader.loadByteCode(JarClassLoader.java:455)
> at
> com.simontuffs.onejar.JarClassLoader.loadByteCode(JarClassLoader.java:446)
> at com.simontuffs.onejar.JarClassLoader.load(JarClassLoader.java:386)
> at com.simontuffs.onejar.JarClassLoader.load(JarClassLoader.java:276)
> at com.simontuffs.onejar.Boot.run(Boot.java:282)
> at com.simontuffs.onejar.Boot.main(Boot.java:159)
>
> Please advise.
>
> Thank you very much for your kind efforts,
>
> Cheers,
> John
>
>
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