Re: Prototyping and Creating integer objects in RPG for callingJavaclasses

[Gary Guthrie <garyguthrie@xxxxxxxxxxx>]

Try:

     D convert         Pr              O   Extproc( *Java :
     D                                     'conversionTest' :
     D                                     *Constructor )
     D                                 O   Class( *Java :
     D                                     'java.io.File' )
     D                               10I 0 Value

Gary Guthrie


meovino@estes-express.com wrote:
>
> > Mike, you've got to read the whole "RPG and Java" section in the ILE RPG
> > Programmer's Guide.
>
> Barbara, I HAVE read the whole section.  Perhaps you missed the beginning
> of the thread, but I do not claim to be  an RPG programmer nor do I claim
> to be a Java programmer.  I just got stuck with trying to make this work.
>
> I have re-read the chapter several times, and it looks as if I need to call
> the Java method passing an instance parameter as the first parm.
> Unfortunately, the book does not appear to give any examples of calling a
> non-static method that does not return a value.  The method is defined as
> follows:
>
> public class conversionTest
> {
>
>   public conversionTest(File f, int format)
>
> The prototype now looks like this:
>
> D Class1          C                   'conversionTest'
>  *  java method
> D convert         PR                  ExtProc(*JAVA:
> D                                            Class1:'conversionTest')
>  *  method parameters
> D  f                              O   Class(*JAVA:'java.io.File')
> D                                     Const
> D  format                       10I 0 Value
>
> And I have defined an object called obj.  However, I don't really know what
> to define it as.  I have tried both
>
> D obj             S               O   Class(*JAVA:Class1)
>
> and
>
> D obj             S               O   Class(*JAVA:'java.lang.Object')
>
> Both compile; neither works.
>
> I am calling the method as follows:
>
> c                   callp     convert(obj:fFile:format)
>
> And every time I do, I get a NoSuchMethodError.  But the signature it tells
> me it can't find ("(Ljava.io.File;I)V" in class "conversionTest") looks
> like the signature I find when I run javap on conversionTest
> ((Ljava/io/File;I)V).  I'm sure I'm being dense here, but I genuinely don't
> know what I'm doing wrong.
>
> Mike E.
>
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