java - jOpenDocument: problems trying to generate PDF from ODS in -

i have .ods file , want export pdf using jopendocument (java).

i use following code:

                         // load ods file         final opendocument filledcertificate = new opendocument();         filledcertificate.loadfrom("filledcertificate.ods");          // open pdf document         document document = new document(pagesize.a4);         file outfile = new file("certificate.pdf");          pdfdocument pdf = new pdfdocument();          document.adddoclistener(pdf);         system.out.println("test");         fileoutputstream fileoutputstream = new fileoutputstream(outfile);         pdfwriter writer = pdfwriter.getinstance(pdf, fileoutputstream);         pdf.addwriter(writer);          document.open();          // create template , graphics2d object          rectangle pagesize = document.getpagesize();         int w = (int) (pagesize.getwidth() * 0.9);         int h = (int) (pagesize.getheight() * 0.95);         pdfcontentbyte cb = writer.getdirectcontent();         pdftemplate tp = cb.createtemplate(w, h);         system.out.println("test 2");         graphics2d g2 = tp.createprintergraphics(w, h, null);         // if want prevent copy/paste, can use         // g2 = tp.creategraphicsshapes(w, h, true, 0.9f);          tp.setwidth(w);         tp.setheight(h);         system.out.println("test 3");          // configure renderer         odtrenderer renderer = new odtrenderer(filledcertificate);          system.out.println("test 3.1");         renderer.setignoremargins(true);         system.out.println("test 3.2");         renderer.setpaintmaxresolution(true);         system.out.println("test 4");                               // scale renderer fit width         renderer.setresizefactor(renderer.getprintwidth() / w);         // render         renderer.paintcomponent(g2);         g2.dispose();          // add our spreadsheet in middle of page         float offsetx = (pagesize.getwidth() - w) / 2;         float offsety = (pagesize.getheight() - h) / 2;         cb.addtemplate(tp, offsetx, offsety);         system.out.println("test 5");         // close pdf document         document.close(); 

when running, console shows following:

stylepagelayoutproperties: assuming page format a4: width:  21.0cm stylepagelayoutproperties: assuming page format a4: height: 29.7cm stylepagelayoutproperties: assuming page format a4: width:  21.0cm stylepagelayoutproperties: assuming page format a4: height: 29.7cm test test 2 test 3 pageheigth:297000 [stylestyle: name:co1 family:table-column cellprops:null                              mastertablename:null, stylestyle: name:ro1 family:table-row cellprops:null mastertablename:null, stylestyle: name:ta1 family:table cellprops:null mastertablename:default, stylestyle: name:default family:null cellprops:null mastertablename:null] key:co1 key:ro1 key:ta1 key:default java.lang.illegalargumentexception: unable find style name:null type:table-cell @ org.jopendocument.model.office.officeautomaticstyles.getstyle(unknown source) @ org.jopendocument.model.office.officeautomaticstyles.getcellstyle(unknown source) @ org.jopendocument.model.table.tabletable.getcellstyle(unknown source) @ org.jopendocument.model.table.tabletablecell.computestyle(unknown source) @ org.jopendocument.model.table.tabletablecell.setrowandcolumn(unknown source) @ org.jopendocument.model.table.tabletablerow.computeallcells(unknown source) @ org.jopendocument.model.table.tabletablerow.getcellsinrange(unknown source) @ org.jopendocument.renderer.odtrenderer.getpagewidthinpixel(unknown source) @ org.jopendocument.renderer.odtrenderer.updatesize(unknown source) @ org.jopendocument.renderer.odtrenderer.setresizefactor(unknown source) @ org.jopendocument.renderer.odtrenderer.setdocument(unknown source) @ org.jopendocument.renderer.odtrenderer.<init>(unknown source) @ jopendocument.createdocument.main(createdocument.java:82) 

i have no idea style can modify here? instantiation requires opendocument parameter.

exception handling included (not part of snippet).

thanks in advance!

i solve myself: used older version of jopendocument (1.3).