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From: Sylvain on 2 Dec 2009 17:38
Hello,

Let's say I want to define this in java :

package internet;
public class Downloader {
public enum DownloadStatus { INITIALIZING, IN_PROGRESS, COMPLETE };
}

How do I access the enum from matlab.

It seems that it works if the enum is defined outside of any class
(says Andrew here : http://stackoverflow.com/questions/1223795/using-java-enums-or-public-static-fields-in-matlab
) . But In this case, nothing seems to work in matlab

import internet.Downloader.DownloadStatus; does not work, it is not
recognized
internet.Downloader.DownloadStatus; does not work
internet.Downloader.DownloadStatus.INITIALIZING does not work
creating an empty object Downloader then trying to access
Downloadstatus does not work
I tried even the most stupid things, can't make it work

Why I want to do this ? Because there is a method in a java library
that asks for an enum type defined inside a class, so I need by any
means to create this enum type in matlab and pass it to the method as
a parameter.

Thanks for your help :)
From: Yair Altman on 3 Dec 2009 02:32
Sylvain <sylvain.boltz(a)gmail.com> wrote in message <1eea19c7-391b-4b3d-b4e6-1d9240b40410(a)m25g2000yqc.googlegroups.com>...
> Hello,
>
> Let's say I want to define this in java :
>
> package internet;
> public class Downloader {
> public enum DownloadStatus { INITIALIZING, IN_PROGRESS, COMPLETE };
> }
>
> How do I access the enum from matlab.
>
> It seems that it works if the enum is defined outside of any class
> (says Andrew here : http://stackoverflow.com/questions/1223795/using-java-enums-or-public-static-fields-in-matlab
> ) . But In this case, nothing seems to work in matlab
>
> import internet.Downloader.DownloadStatus; does not work, it is not
> recognized
> internet.Downloader.DownloadStatus; does not work
> internet.Downloader.DownloadStatus.INITIALIZING does not work
> creating an empty object Downloader then trying to access
> Downloadstatus does not work
> I tried even the most stupid things, can't make it work
>
> Why I want to do this ? Because there is a method in a java library
> that asks for an enum type defined inside a class, so I need by any
> means to create this enum type in matlab and pass it to the method as
> a parameter.
>
> Thanks for your help :)


You can try 'internet.Downloader$DownloadStatus' within the awtinvoke or javaMethod functions (this should work but I'm not 100% certain).

Alternately, use the method I used for system-tray messages, which has the same issue: http://undocumentedmatlab.com/blog/setting-system-tray-popup-messages/

Yair Altman
http://UndocumentedMatlab.com

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