How to create a table in which the cells have different widths?

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How to create with Java a table with three different row widths.

How to create a table with Java that has three rows as follows:

First row has one cell 100% entire table width
Second row has first from the left cell width 50mm, and second 20mm and third 30mm which in total is 100% of table width
Third row has first from the left cell width 30mm, and second 50mm and third 10mm which in total is 90% of table width

In short: what would the iText code look like if I wanted a table as shown here:

Question posted on StackOverflow on Dec 30, 2015 by mCs

So you want to use iText to create a table that looks like this:

The PDF in the screen shot was created using the TableMeasurements example. The resulting PDF can also be downloaded for inspection: table_measurements.pdf

The first thing that jumps to the eye when looking at this screenshot is the fact that the table doesn't look "complete". But for iText7 it is not a problem:

In your case, we'd have something like this:

Java

public void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
        Document doc = new Document(pdfDoc);
        Table table = new Table(10);
        table.setWidth(millimetersToPoints(100));
        table.addCell(getCell(10));
        table.addCell(getCell(5));
        table.addCell(getCell(3));
        table.addCell(getCell(2));
        table.addCell(getCell(3));
        table.addCell(getCell(5));
        table.addCell(getCell(1));
        doc.add(table);
        doc.close();
}

To make the example more realistic, I created a table with an exact width of 100 mm. I add all the cells with the different widths (10 cm, 5 cm, 3 cm, 2 cm, 3 cm, 5 cm, 1 cm).

What does the getCell() method look like, you might wonder. This is shown here:

Java

private Cell getCell(int cm) {
    Cell cell = new Cell(1, cm);
      Paragraph p = new Paragraph(
      String.format("%smm", 10 * cm)).setFontSize(8);
      p.setTextAlignment(TextAlignment.CENTER);
    cell.add(p);
      return cell;
}

We create a Cell and we set the colspan to reflect the width in cm.

Click How to create a table in which the cells have different widths? if you want to see how to answer this question in iText 5.