B4J Question Warning on Jasper Report print

[amorosik]

I have a code fragment that gives me a warning and I don't understand why
It is the code used to start printing a jasper report on the default Windows printer
The data is taken from a SqLite db

Sub avvia_stampa_documento_su_stampante_predefinita(id_doc_tes As String, nome_file_comandi As String)As Long
    Dim jasper As JasperReports
    Dim report As JasperReport
    Dim print As JasperPrint
    Dim conn As JasperConnection
    Dim selPrinter As String
  
    Dim P As Printer = Printer_Static.GetDefaultPrinter
    selPrinter=P.GetName
  
    jasper.InitializeParameters
    jasper.AddParameter("id_doc_tes",id_doc_tes)
    report = jasper.CompileXML(File.Combine("C:\PUBLIC\ERP2\Sqlite_Data", "erp2_sqlite_impegno.jrxml"))
    conn = jasper.getConnectionSQLite(File.Combine("C:\PUBLIC\ERP2\Sqlite_Data", "ERP2_SQLITE_PRINT.db"))
  
    print = jasper.Print(report, jasper.parameters, conn)

The warning appear on "report = jasper.CompileXML(..." row, and appear on Log windows as:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by net.sf.jasperreports.engine.util.ClassUtils (file:/D:/SORGENTI/B4J/000_LIBRERIE_B4J/jasperreports-6.17.0.jar) to constructor com.sun.org.apache.xerces.internal.util.XMLGrammarPoolImpl()
WARNING: Please consider reporting this to the maintainers of net.sf.jasperreports.engine.util.ClassUtils
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

What could the indicated warning depend on?

 

[Daestrum]

Probably the use of com.sun.org.... class by jasperreports.jar.

Oracle have been warning forever that internal libraries will be protected from use as versions of java increase.

 

[amorosik]

Probably the use of com.sun.org.... class by jasperreports.jar.

Oracle have been warning forever that internal libraries will be protected from use as versions of java increase.

So what could I use to print with Jasper Report?

 

[Daestrum]

See if they have a newer version - they may have recoded to avoid the internal libs, or try adding an --add-opens

 

[amorosik]

I followed DarkoT's instructions and the warning was eliminated
I see now that recent versions of Jasper Report Studio and libraries have been released
But using the JasperReport2 library (which uses the jasperreports-6.17.0.jar) I don't know if the new versions can work correctly

 

[DonManfred]

But using the JasperReport2 library (which uses the jasperreports-6.17.0.jar) I don't know if the new versions can work correctly

i guess you have to test it and create a new thread for any issue you discover.