Load a file and return its Base 64 value

filetobase64.java

public String fileToBase64(String path){
        String base64 = "";
        try {
            File file = new File(path);
            byte[] buffer = new byte[(int) file.length() + 100];
            @SuppressWarnings("resource")
            int length = new FileInputStream(file).read(buffer);
            base64 = Base64.encodeToString(buffer, 0, length,  Base64.DEFAULT);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return base64;
    }