itext Columns: iText 5 versus iText 7 Text2PdfColumns.java (iText 7)

Example

Suppose that you have the following text file: jekyll_hyde.txt

How do we convert it to a PDF that looks like this:

When using iText 7, you'd need code like this:

public void createPdf(String dest) throws IOException {
    PdfDocument pdf = new PdfDocument(new PdfWriter(dest));
    Document document = new Document(pdf)
        .setTextAlignment(TextAlignment.JUSTIFIED);
    Rectangle[] columns = {
        new Rectangle(36, 36, 254, 770),
        new Rectangle(305, 36, 254, 770)};
    document.setRenderer(new ColumnDocumentRenderer(document, columns));
    BufferedReader br = new BufferedReader(new FileReader(TEXT));
    String line;
    PdfFont normal = PdfFontFactory.createFont(FontConstants.TIMES_ROMAN);
    PdfFont bold = PdfFontFactory.createFont(FontConstants.TIMES_BOLD);
    boolean title = true;
    while ((line = br.readLine()) != null) {
        document.add(new Paragraph(line).setFont(title ? bold : normal));
        title = line.isEmpty();
    }
    document.close();
}

Source: developers.itextpdf.com and the iText 7: Building Blocks tutorial.