public static void ExtractForFolder()

in tokenizers/java/src/main/java/javatokenizer/Extractor.java [51:82]
30 lines of code
4 McCabe index (conditional complexity)

    public static void ExtractForFolder(File projectFolder, File outputFolder, boolean onlyIdentifiers, File baseFolder) {
        Iterator<File> allFiles = FileUtils.iterateFiles(projectFolder, new String[] {"java"}, true);
        try {
            FileOutputStream output = new FileOutputStream(Paths.get(outputFolder.toPath().toString(),  projectFolder.getName() + ".jsonl.gz").toFile());
            Gson gson = new GsonBuilder().create();

            try {
                Writer writer = new OutputStreamWriter(new GZIPOutputStream(output), "UTF-8");
                Iterable<File> fileIter = ()-> allFiles;
                StreamSupport.stream(
                    fileIter.spliterator(), true).map(f-> TokenizeFile(f, onlyIdentifiers, baseFolder))
                    .map(t->gson.toJson(t)).filter(g->g!=null).sequential().forEach(g->{
                        try{
                            writer.write(g);
                            writer.write('\n');
                        } catch (IOException ioe) {
                            // really?
                            ioe.printStackTrace();
                        }
                    });
                writer.close();
            } catch(Exception e) {
                System.out.println("Error for project " + projectFolder + ": " + e);
                e.printStackTrace();
            } finally {
                output.close();
            }
        } catch (IOException e) {
            System.out.println("Error for project " + projectFolder + ": " + e);
            e.printStackTrace();
        }
    }