Shape Annotations via Java

Add shape annotations

1. Open the input PDF and choose the page and rectangle that will contain the shape annotation.
2. Create the required shape annotation, then set its title, colors, opacity, and points when needed.
3. Add the annotation to the page and save the modified PDF.

public static void squareAnnotationAdd(Path inputFile, Path outputFile) {
    try (Document document = new Document(inputFile.toString())) {
        SquareAnnotation squareAnnotation = new SquareAnnotation(
                document.getPages().get_Item(1), new Rectangle(60, 600, 250, 450, true));
        squareAnnotation.setTitle("John Smith");
        squareAnnotation.setColor(Color.getBlue());
        squareAnnotation.setInteriorColor(Color.getBlueViolet());
        squareAnnotation.setOpacity(0.25);

        document.getPages().get_Item(1).getAnnotations().add(squareAnnotation);
        document.save(outputFile.toString());
    }
}

public static void polygonAnnotationAdd(Path inputFile, Path outputFile) {
    try (Document document = new Document(inputFile.toString())) {
        PolygonAnnotation polygonAnnotation = new PolygonAnnotation(
                document.getPages().get_Item(1),
                new Rectangle(200, 300, 400, 400, true),
                new Point[]{
                        new Point(200, 300),
                        new Point(220, 300),
                        new Point(250, 330),
                        new Point(300, 304),
                        new Point(300, 400)
                });
        polygonAnnotation.setTitle("John Smith");
        polygonAnnotation.setColor(Color.getBlue());
        polygonAnnotation.setInteriorColor(Color.getBlueViolet());
        polygonAnnotation.setOpacity(0.25);

        document.getPages().get_Item(1).getAnnotations().add(polygonAnnotation);
        document.save(outputFile.toString());
    }
}