无法使用java生成AAD令牌

import com.microsoft.aad.msal4j.*;

public class AADTokenGenerator {
    public static void main(String[] args) {
        String clientId = "Your_Client_Id";
        String clientSecret = "Your_Client_Secret";
        String authority = "https://login.microsoftonline.com/Your_Tenant_Id";

        IConfidentialClientApplication app;
        try {
            app = ConfidentialClientApplication.builder(clientId, ClientCredentialFactory.createFromSecret(clientSecret))
                    .authority(authority)
                    .build();

            ClientCredentialParameters parameters = ClientCredentialParameters.builder(
                    Collections.singleton("https://graph.microsoft.com/.default"))
                    .build();

            CompletableFuture<IAuthenticationResult> future = app.acquireToken(parameters);
            IAuthenticationResult result = future.get();

            String accessToken = result.accessToken();
            System.out.println("AAD Token: " + accessToken);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}