Formatting object from xml to pdf conversion

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Java

XSL

hi all,
We are creating a project for employee management, in the project there is one task that is the export to pdf means we are exporting all detail of page into a pdf, in that task first we have created POJO, from that POJO we are translating information into the xml, & from that xml we are creating the pdf.
My problem is that in xml we are getting all the data but how to get diagram in detail & how to convert that diagram to the pdf using xsl:fo?