How to export a report to PDF/A with logical JVM font?

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In our project we use the Jasper class 'JRPdfExporter' to export a generated Jasper report to PDF/A successfully. The most critical thing was to embed the font. We followed the recommended instruction in this answer posting.

1. We registered a font extension following this posting
2. And configured the "fonts.xml" file to use the font we use in the report.

This way works well, because we use a physical font (for example "Arial" or "Arial Unicode MS" or another):

• in report design AND
• as registed font for PDF/A export.

If we switch to one to the 5 logical JVM fonts (see Oracle documentation, referenced also on this answer posting) like "Dialog", then the 'JRPdfExporter' fails with an error message:

net.sf.jasperreports.exception.export.pdf.font.loading.error=Could not load the following font: npdfFontName: {0}npdfEncoding: {1}nisPdfEmbedded : {2}[/code]

The root cause is very clear: the PDF-exportert tries to find an physical font "Dialog", that does not exist.

My questions are:

• Is is possible to export a Jasper report to PDF/A using logical JVM fonts?
• If no, we have to live with this restriction?
• If yes, can sou please give me an instruction "How to do"?

Thanks,
Edmund