Thanks it worked perfectly.
I had however to create the GraphicsStates Map (HashMap called "map").
PDExtendedGraphicsState gs1 = new PDExtendedGraphicsState();
gs1.setNonStrokingAlphaConstant(.33f);
HashMap<String, PDExtendedGraphicsState> map = new HashMap<String,
PDExtendedGraphicsState>();
map.put("gs1", gs1);
currPage.findResources().setGraphicsStates(map);
...
contentStream.saveGraphicsState();
contentStream.appendRawCommands("/gs1 gs\n");
contentStream.drawXObject(otherDoc, transform);
contentStream.restoreGraphicsState();
Thanks a lot
Best regards,
G. Coppex