Re^3: Inline::Java Question

[wpflum]

I was able to drop the external class I made to interface to the awt class in java but I still get an error when it tries to send the image object to the java class to load it. I can actually print the object $image and I get InLine::Java::Object=HASH(0x94da3a8) Here is the code:

#!/usr/bin/perl
use strict; use warnings; 
use Inline (Java => 'STUDY',
          CLASSPATH => '/usr/share/java/RXTXcomm.jar:/home/billp/Deskt
+op/perl/SigPlus2_57.jar:/home/billp/Desktop/perl/rt.jar',
        STUDY => ['com.topaz.sigplus.SigPlus','java.awt.Image'],
        AUTOSTUDY =>1);

use Inline Java => <<EOJ;
import java.awt.*;
public class ADMLibrary{

    public Image GetJavaImageObject(String Filename) {
        return Toolkit.getDefaultToolkit().getImage(Filename);
    }
}
EOJ

    my $filename = "/home/billp/Desktop/perl/Screen2.jpg";
    my $adm = new ADMLibrary();
    my $image = $adm->GetJavaImageObject($filename);
    my $sigobj = new com::topaz::sigplus::SigPlus();
       $sigobj->lcdWriteImage(0, 2, 3, 46, 233, 24, $image);
1;

Any Suggestions??

[tobyink]

My general advice when using Inline is to keep data passed between Perl and the other language as simple as possible. Passing a Perl object to a Java object as a method parameter is doable, but seems advisable. I tried to make sure I was only passing strings through to Java.

Clearly some Java classes expect more complex data structures to be passed to them - but you write wrappers for those, and do (for example) JSON encoding/decoding at each end.