Download a File From an URL in Java | Baeldung

try (BufferedInputStream in = new BufferedInputStream(new URL(FILE_URL).openStream());
  FileOutputStream fileOutputStream = new FileOutputStream(FILE_NAME)) {
    byte dataBuffer[] = new byte[1024];
    int bytesRead;
    while ((bytesRead = in.read(dataBuffer, 0, 1024)) != -1) {
        fileOutputStream.write(dataBuffer, 0, bytesRead);
    }
} catch (IOException e) {
    // handle exception
}