public static void main(String[] args) throws IOException {
    var stream = new FileInputStream(new File("/path/to/diff.txt"));
    var patch  = UnifiedDiffReader.parseUnifiedDiff(stream);

    patch.getFiles().forEach(f -> {
        System.out.println("File: " + f.getFromFile());
        f.getPatch().getDeltas().forEach(delta -> {

            System.out.println("Source: ");
            System.out.println(delta.getSource().getPosition());
            delta.getSource().getChangePosition().forEach(System.out::print);

            System.out.println("Target: ");
            System.out.println(delta.getTarget().getPosition());
            delta.getTarget().getChangePosition().forEach(System.out::print);
        });
    });
}