How to pass values and information from one method to another using selenium java

public static void PDF_Read(String object, String data) throws Exception{
       try{
       Log.info("Radio Button has been selected");
       List<String> outputs = new ArrayList<String>();
       
    System.setProperty("webdriver.chrome.driver", Constants.Path_driver);
   WebDriver driver = new ChromeDriver();

    File[] files = new File(object).listFiles(File::isFile);
    
    for (File file: files) {
        String fileExtension = file.getName().split("\\.")[file.getName().split("\\.").length - 1];
        if (fileExtension.toLowerCase().equals("pdf")) {
           String fileUrl = "file:///" + file.getAbsolutePath();
           driver.get(fileUrl);
            URL url = new URL(driver.getCurrentUrl());
            InputStream is = url.openStream();
            BufferedInputStream fileToParse = new BufferedInputStream(is);
            PDDocument document = null;
            String output;
            try {
                document = PDDocument.load(fileToParse);
                output = new PDFTextStripper().getText(document);
                
            } finally {
                if (document != null) {
                    document.close();
                }
                fileToParse.close();
                is.close();
            }
            
            outputs.add(output);
            //System.out.println(outputs);
            //Log.info ("The "+file.getName()+" File Containes"+ data+"="+output.contains(data));
            //System.out.println ("The "+file.getName()+" File Containes"+ data+"="+output.contains(data));
            
        }
        
    }
    //return outputs;
    //driver.quit();
    return;
       }catch(Exception e){
       Log.error("Radio Button has not been selected --- " + e.getMessage());
       DriverScript.bResult = false;
                }
       }
// second method which i am trying to pass the variables and information's from the first method

public static void PDF_VALIDATION( String data,String output, File file){
       try{
       // Log.info("Closing the browser");
       
        //Log.info ("The "+file.getName()+" File Containes"+ data+"="+output.contains(data));
     System.out.println ("The "+file.getName()+" File Containes"+ data+"="+output.contains(data));
     return;
       }catch(Exception e){
       Log.error("Not able to Close the Browser --- " + e.getMessage());
       DriverScript.bResult = false;
                }
       }