Load a font “SimsunBold” throw an exception

PDDocument doc = new PDDocument();
PDPage page = new PDPage();
doc.addPage(page);
PDPageContentStream stream = new PDPageContentStream(doc, page);
TrueTypeFont ttFont = new TTFParser().parse("simsunbd.ttf");
PDFont font = PDType0Font.load(doc, ttFont, true);