public static void detectHandwrittenOcrGcs()

in vision/snippets/src/main/java/com/example/vision/DetectBeta.java [266:327]
53 lines of code
8 McCabe index (conditional complexity)

  public static void detectHandwrittenOcrGcs(String gcsPath, PrintStream out) throws Exception {
    List<AnnotateImageRequest> requests = new ArrayList<>();

    ImageSource imgSource = ImageSource.newBuilder().setGcsImageUri(gcsPath).build();
    Image img = Image.newBuilder().setSource(imgSource).build();

    Feature feat = Feature.newBuilder().setType(Type.DOCUMENT_TEXT_DETECTION).build();
    // Set the parameters for the image
    ImageContext imageContext =
        ImageContext.newBuilder().addLanguageHints("en-t-i0-handwrit").build();

    AnnotateImageRequest request =
        AnnotateImageRequest.newBuilder()
            .addFeatures(feat)
            .setImage(img)
            .setImageContext(imageContext)
            .build();
    requests.add(request);

    try (ImageAnnotatorClient client = ImageAnnotatorClient.create()) {
      BatchAnnotateImagesResponse response = client.batchAnnotateImages(requests);
      List<AnnotateImageResponse> responses = response.getResponsesList();
      client.close();

      for (AnnotateImageResponse res : responses) {
        if (res.hasError()) {
          out.printf("Error: %s\n", res.getError().getMessage());
          return;
        }

        // For full list of available annotations, see http://g.co/cloud/vision/docs
        TextAnnotation annotation = res.getFullTextAnnotation();
        for (Page page : annotation.getPagesList()) {
          String pageText = "";
          for (Block block : page.getBlocksList()) {
            String blockText = "";
            for (Paragraph para : block.getParagraphsList()) {
              String paraText = "";
              for (Word word : para.getWordsList()) {
                String wordText = "";
                for (Symbol symbol : word.getSymbolsList()) {
                  wordText = wordText + symbol.getText();
                  out.format(
                      "Symbol text: %s (confidence: %f)\n",
                      symbol.getText(), symbol.getConfidence());
                }
                out.format("Word text: %s (confidence: %f)\n\n", wordText, word.getConfidence());
                paraText = String.format("%s %s", paraText, wordText);
              }
              // Output Example using Paragraph:
              out.println("\nParagraph: \n" + paraText);
              out.format("Paragraph Confidence: %f\n", para.getConfidence());
              blockText = blockText + paraText;
            }
            pageText = pageText + blockText;
          }
        }
        out.println("\nComplete annotation:");
        out.println(annotation.getText());
      }
    }
  }