public static void main()

in code_examples/java_examples/image/java-compare-faces.java [22:80]
47 lines of code
4 McCabe index (conditional complexity)

   public static void main(String[] args) throws Exception{
       Float similarityThreshold = 70F;
       String sourceImage = "source.jpg";
       String targetImage = "target.jpg";
       ByteBuffer sourceImageBytes=null;
       ByteBuffer targetImageBytes=null;

       AmazonRekognition rekognitionClient = AmazonRekognitionClientBuilder.defaultClient();

       //Load source and target images and create input parameters
       try (InputStream inputStream = new FileInputStream(new File(sourceImage))) {
          sourceImageBytes = ByteBuffer.wrap(IOUtils.toByteArray(inputStream));
       }
       catch(Exception e)
       {
           System.out.println("Failed to load source image " + sourceImage);
           System.exit(1);
       }
       try (InputStream inputStream = new FileInputStream(new File(targetImage))) {
           targetImageBytes = ByteBuffer.wrap(IOUtils.toByteArray(inputStream));
       }
       catch(Exception e)
       {
           System.out.println("Failed to load target images: " + targetImage);
           System.exit(1);
       }

       Image source=new Image()
            .withBytes(sourceImageBytes);
       Image target=new Image()
            .withBytes(targetImageBytes);

       CompareFacesRequest request = new CompareFacesRequest()
               .withSourceImage(source)
               .withTargetImage(target)
               .withSimilarityThreshold(similarityThreshold);

       // Call operation
       CompareFacesResult compareFacesResult=rekognitionClient.compareFaces(request);


       // Display results
       List <CompareFacesMatch> faceDetails = compareFacesResult.getFaceMatches();
       for (CompareFacesMatch match: faceDetails){
         ComparedFace face= match.getFace();
         BoundingBox position = face.getBoundingBox();
         System.out.println("Face at " + position.getLeft().toString()
               + " " + position.getTop()
               + " matches with " + face.getConfidence().toString()
               + "% confidence.");

       }
       List<ComparedFace> uncompared = compareFacesResult.getUnmatchedFaces();

       System.out.println("There was " + uncompared.size()
            + " face(s) that did not match");
       System.out.println("Source image rotation: " + compareFacesResult.getSourceImageOrientationCorrection());
       System.out.println("target image rotation: " + compareFacesResult.getTargetImageOrientationCorrection());
   }