<dependency>
  <!-- Include the sdk as a dependency -->
  <groupId>com.microsoft.graph</groupId>
  <artifactId>microsoft-graph</artifactId>
  <version>5.73.0</version>
</dependency>

        String clientId = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
        String clientSecret = "application secret";
        String tenantId = "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";

        // The client credentials flow requires that you request the
        // /.default scope, and pre-configure your permissions on the
        // app registration in Azure. An administrator must grant consent
        // to those permissions beforehand.
        java.util.List<String> scopes = Arrays.asList("https://microsoftgraph.chinacloudapi.cn/.default");
        ClientSecretCredential credential = new ClientSecretCredentialBuilder()
                .authorityHost("https://login.partner.microsoftonline.cn")
                .clientId(clientId).tenantId(tenantId).clientSecret(clientSecret).build();
        if (null == scopes || null == credential) {
            throw new Exception("Unexpected error");
        }
        
        TokenCredentialAuthProvider authProvider = new TokenCredentialAuthProvider(
                scopes, credential);
        GraphServiceClient<okhttp3.Request> graphClient = GraphServiceClient.builder()
                .authenticationProvider(authProvider).buildClient();

        // Specify the user principal name
        String userPrincipalName = "user principal name";
        graphClient.setServiceRoot("https://microsoftgraph.chinacloudapi.cn/v1.0");

        // Use the GraphServiceClient to get the user by user principal name
        User user = graphClient.users(userPrincipalName)
                .buildRequest()
                .get();

        // Get the user object ID
        String objectId = user.id;