public static void main(String[] args) throws IOException, DocumentException {
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    String[] fontFamily = ge.getAvailableFontFamilyNames();
    PrintStream out1 = new PrintStream(new FileOutputStream(RESULT1));
    for (int i = 0; i < fontFamily.length; i++) {
      out1.println(fontFamily[i]);
    }
    out1.flush();
    out1.close();

    DefaultFontMapper mapper = new DefaultFontMapper();
    mapper.insertDirectory("c:/windows/fonts/");
    PrintStream out2 = new PrintStream(new FileOutputStream(RESULT2));
    for (Entry<String, BaseFontParameters> entry : mapper.getMapper().entrySet()) {
      out2.println(String.format("%s: %s", entry.getKey(), entry.getValue().fontName));
    }
    out2.flush();
    out2.close();

    float width = 150;
    float height = 150;
    Document document = new Document(new Rectangle(width, height));
    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(RESULT3));
    document.open();
    PdfContentByte cb = writer.getDirectContent();
    Graphics2D g2d = cb.createGraphics(width, height, mapper);
    for (int i = 0; i < FONTS.length; ) {
      g2d.setFont(FONTS[i++]);
      g2d.drawString("Hello world", 5, 24 * i);
    }
    g2d.dispose();
    document.close();
  }