Why does DonationAlerts return 'Unauthenticated.' JAVA?

Question

Java

Tried to connect to the DonationAlerts API but it outputs 'Unauthenticated.'

public static void main(String[] args) throws Exception {
        String API = "API_TOKEN";
        HttpRequest request = HttpRequest.newBuilder()
                .uri(URI.create("https://www.donationalerts.com/api/v1/alerts/donations"))
                .header("Authorization", "Bearer " + API)
                .method("GET", HttpRequest.BodyPublishers.noBody())
                .build();
        HttpResponse<String> response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());

    }

Answer 1

I found the answer to my question "Why does DonationAlerts return 'Unauthenticated.' Java?" I found the same question but in Python, I realized that I need to get code, token. If someone also needs help with this issue, then here is another question on this topic