acidlychee

public void convertFileToBase64() {
    String path = this.getClass().getClassLoader().getResource("10012312135.pfx").getPath();
    try {
      byte[] b = Files.toByteArray(new File(path));
      System.out.println(Base64.encodeBase64String(b));
    } catch (IOException e) {
      e.printStackTrace();
    }
}

acidlychee

public void watchservice()
{
    Thread fileWatcher = new Thread(() ->
    {
        Path path = Paths.get(rootDir+"InputFiles/"+dirName+"/request");
        Path dataDir = Paths.get(path);       

        try 
        {
            WatchService watcher = dataDir.getFileSystem().newWatchService();