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Hitachi Vantara Pentaho Community Forums. Remember Me? What's New? Results 1 to 6 of 6. Thread Tools Show Printable Version. Join Date Mar Posts 4. For my app, most of my reports are 2 or more individual reports up to 8 that are returned to the user as a single PDF file. This way I can show them multiple views of the same data financial totals with different groupings and sortings in a single report.

The problem I was having is that I needed a way to show the user how many reports were in their PDF file, and a simple way to navigate between the reports in the PDF. This is what I came up with. So, suppose that you would like to create a PDF in memory and write it to a printer, you'd do something like this:.

However, the code snippet above sends PDF bytes to the printer. Chances are that your printer doesn't understand PDF and just prints out stuff like:. That's what the practical answer is about: it's not that difficult to create a PDF in memory.

That's done like this:. Either your printer understands those bytes there are printers that accept PDF syntax , or you'll have to find software that converts PDF into a format that printers understand.

Many of these viewers Adobe Reader is one of them , require the file to exist as a file: Adobe Reader does not accept a byte array. This explains why the practical answer isn't as easy as the theoretical answer: in practice, your question is far from trivial: it depends on the printer which formats does it accept and the PDF viewer should you require one.

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There's a theoretical and a practical answer to this question. There's a Java class called PrintStream that allows you to send an OutputStream to a printer: Printstream extends FilterOutputStream extends OutputStream A PrintStream adds functionality to another output stream, namely the ability to print representations of various data values conveniently.

List; import com. Cell; import com. Document; import com. DocumentException; import com. Font; import com. HeaderFooter; import com. Image; import com. Paragraph; import com. Table; import com. BaseFont; import com. PdfPCell; import com. JPG" ; jpeg. Color; import java. FileNotFoundException; import java. IOException; import java. DecimalFormat; import java. NumberFormat; import java. Date; import com. Element; import com. PageSize; import com. Phrase; import com.