Convert Multi-page TIFF to Searchable PDF in C#, Java, and C

C# Code: 

static void OCR(string inputFile, string outputFile) { 

     bool use_iris = OCRModule.IsIRISModuleAvailable(); 

     try {  

         // A) Setup empty destination doc using PDFDoc doc = new PDFDoc(); 

   // B) Set English as the language of choice 
   OCROptions opts = new OCROptions(); 
   if (use_iris) opts.SetOCREngine("iris"); 
   opts.AddLang("eng"); 
 
   // C) Run OCR on the .tif with options             
   OCRModule.ImageToPDF(doc, inputFile, opts); 
 
   // D) check the result 
   doc.Save(outputFile, SDFDoc.SaveOptions.e_remove_unused);  

        }  catch (PDFNetException e) { Console.WriteLine(e.Message); }  

} 

static void OCR(String inputFile, String outputFile) { 

                boolean use_iris = OCRModule.isIRISModuleAvailable(); 

                try (PDFDoc doc = new PDFDoc()) // A) Setup empty destination doc 

                { 

                    OCROptions options = new OCROptions(); 

                    if(use_iris) options.setOCREngine("iris"); 

 

                    // B) Run OCR on the .png with options 

                    OCRModule.imageToPDF(doc, input_path, options); 

 

                    // C) check the result 

                    doc.save(output_path, SDFDoc.SaveMode.LINEARIZED, null); 

                     

                } catch (Exception e) { 

                    e.printStackTrace(); 

                } 

            } 

 

C/CPP Code: 

static void OCR(string input_path, string output_path) { 

                try 

                { 

                    const bool use_iris = OCRModule::IsIRISModuleAvailable(); 

             

                    // A) Setup empty destination doc 

                    PDFDoc doc; 

             

                    // B) Run OCR on the .png without options 

                    OCROptions opts; 

                    if (use_iris) opts.SetOCREngine("iris"); 

                    OCRModule::ImageToPDF(doc, input_path, &opts); 

             

                    // C) check the result 

                    doc.Save(output_path, 0, 0); 

                } 

                catch (Common::Exception& e) 

                { 

                    cout << e << endl; 

                } 

                catch (...) 

                { 

                    cout << "Unknown Exception" << endl; 

                } 

            }