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EXAMPLES.md

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Examples using auth0-java

Error handling

Management API errors

The Management API uses a unified ManagementApiException class, which provides access to the HTTP status code, response body, headers, and message of the error response.

import com.auth0.client.mgmt.core.ManagementApiException;

try {
    GetUserResponseContent user = client.users().get("user_id");
} catch (ManagementApiException e) {
    int statusCode = e.statusCode();
    Object body = e.body();
    Map<String, List<String>> headers = e.headers();
    String message = e.getMessage();
}

Authentication API errors

The Authentication API uses APIException for error handling.

import com.auth0.exception.APIException;

try {
    TokenHolder holder = authAPI.requestToken("https://{YOUR_DOMAIN}/api/v2/").execute().getBody();
} catch (APIException e) {
    int statusCode = e.getStatusCode();
    String description = e.getDescription();
    String error = e.getError();
}

HTTP Client configuration

Authentication API

The Authentication API client uses the OkHttp networking library to make HTTP requests. The client can be configured by building a DefaultHttpClient and providing it to the API client.

Auth0HttpClient httpClient = DefaultHttpClient.newBuilder()
        // configure as needed
        .build();

AuthAPI auth = AuthAPI.newBuilder("{YOUR_DOMAIN}", "{YOUR_CLIENT_ID}", "{YOUR_CLIENT_SECRET}")
        .withHttpClient(httpClient)
        .build();

If the DefaultHttpClient does not support your required networking client configuration, you may choose to implement your own client by implementing the Auth0HttpClient interface and providing it to the API client. This is an advanced use case and should be used only when necessary.

Management API

The Management API client uses ManagementApi as the main entry point. You can configure a custom OkHttpClient via the builder:

import com.auth0.client.mgmt.ManagementApi;

OkHttpClient okHttpClient = new OkHttpClient.Builder()
        // configure as needed
        .build();

ManagementApi client = ManagementApi.builder()
        .domain("{YOUR_DOMAIN}")
        .token("{YOUR_API_TOKEN}")
        .httpClient(okHttpClient)
        .build();

Management API usage

Creating a client with a static token

import com.auth0.client.mgmt.ManagementApi;

ManagementApi client = ManagementApi.builder()
        .domain("{YOUR_DOMAIN}")
        .token("{YOUR_API_TOKEN}")
        .build();

Creating a client with client credentials (recommended)

When using client credentials, the SDK automatically fetches and caches access tokens, refreshing them before expiry.

import com.auth0.client.mgmt.ManagementApi;

ManagementApi client = ManagementApi.builder()
        .domain("{YOUR_DOMAIN}")
        .clientCredentials("{YOUR_CLIENT_ID}", "{YOUR_CLIENT_SECRET}")
        .build();

You can also specify a custom audience:

ManagementApi client = ManagementApi.builder()
        .domain("{YOUR_DOMAIN}")
        .clientCredentials("{YOUR_CLIENT_ID}", "{YOUR_CLIENT_SECRET}")
        .audience("{YOUR_AUDIENCE}")
        .build();

Creating a client with advanced options

ManagementApi client = ManagementApi.builder()
        .domain("{YOUR_DOMAIN}")
        .clientCredentials("{YOUR_CLIENT_ID}", "{YOUR_CLIENT_SECRET}")
        .timeout(30)        // timeout in seconds (default: 60)
        .maxRetries(3)      // max retries (default: 2)
        .addHeader("X-Custom-Header", "value")
        .build();

Accessing resources

The Management API is organized into resource clients:

// Get a user
GetUserResponseContent user = client.users().get("user_id");

// Get a role
GetRoleResponseContent role = client.roles().get("role_id");

// Create a user
CreateUserResponseContent newUser = client.users().create(
        CreateUserRequestContent.builder()
                .email("user@example.com")
                .connection("Username-Password-Authentication")
                .password("securePassword123!")
                .build()
);

// Update a user
UpdateUserResponseContent updatedUser = client.users().update(
        "user_id",
        UpdateUserRequestContent.builder()
                .name("Updated Name")
                .build()
);

// Delete a user
client.users().delete("user_id");

Pagination

List operations return a SyncPagingIterable that supports automatic pagination:

import com.auth0.client.mgmt.core.SyncPagingIterable;
import com.auth0.client.mgmt.types.ListUsersRequestParameters;
import com.auth0.client.mgmt.types.UserResponseSchema;

SyncPagingIterable<UserResponseSchema> users = client.users().list(
        ListUsersRequestParameters.builder()
                .perPage(50)
                .build()
);

// Iterate through all pages automatically
for (UserResponseSchema user : users) {
    System.out.println(user.getEmail());
}

// Or access pages manually
List<UserResponseSchema> pageItems = users.getItems();
while (users.hasNext()) {
    pageItems = users.nextPage().getItems();
}

Accessing raw HTTP responses

Use withRawResponse() to access HTTP response metadata:

import com.auth0.client.mgmt.core.ManagementApiHttpResponse;

ManagementApiHttpResponse<GetUserResponseContent> response = client.users()
        .withRawResponse()
        .get("user_id");

GetUserResponseContent user = response.body();
Map<String, List<String>> headers = response.headers();

Nested sub-resources

Some resources have nested sub-clients:

// List a user's roles
SyncPagingIterable<Role> roles = client.users().roles().list("user_id");

// List a user's permissions
SyncPagingIterable<Permission> permissions = client.users().permissions().list("user_id");

// List organization members
SyncPagingIterable<OrganizationMember> members = client.organizations().members().list("org_id");

Verifying an ID token

This library also provides the ability to validate an OIDC-compliant ID Token, according to the OIDC Specification.

Verifying an ID Token signed with the RS256 signing algorithm

To verify an ID Token that is signed using the RS256 signing algorithm, you will need to provide an implementation of PublicKeyProvider that will return the public key used to verify the token's signature. The example below demonstrates how to use the JwkProvider from the jwks-rsa-java library:

JwkProvider provider = new JwkProviderBuilder("https://your-domain.auth0.com").build();
SignatureVerifier signatureVerifier = SignatureVerifier.forRS256(new PublicKeyProvider() {
    @Override
    public RSAPublicKey getPublicKeyById(String keyId) throws PublicKeyProviderException {
       try {
            return (RSAPublicKey) provider.get(keyId).getPublicKey();
        } catch (JwkException jwke) {
            throw new PublicKeyProviderException("Error obtaining public key", jwke);
        }
    }
}

IdTokenVerifier idTokenVerifier = IdTokenVerifier.init("https://your-domain.auth0.com/","your-client-id", signatureVerifier).build();

try {
    idTokenVerifier.verify("token", "expected-nonce");
} catch(IdTokenValidationException idtve) {
    // Handle invalid token exception
}

Verifying an ID Token signed with the HS256 signing algorithm

To verify an ID Token that is signed using the HS256 signing algorithm:

SignatureVerifier signatureVerifier = SignatureVerifier.forHS256("your-client-secret");
IdTokenVerifier idTokenVerifier = IdTokenVerifier.init("https://your-domain.auth0.com/","your-client-id", signatureVerifier).build();

try {
    idTokenVerifier.verify("token", "expected-nonce");
} catch(IdTokenValidationException idtve) {
    // Handle invalid token exception
}

Organizations

Organizations is a set of features that provide better support for developers who build and maintain SaaS and Business-to-Business (B2B) applications.

Note that Organizations is currently only available to customers on our Enterprise and Startup subscription plans.

Log in to an organization

Log in to an organization by using withOrganization() when building the Authorization URL:

AuthAPI auth = AuthAPI.newBuilder("{YOUR_DOMAIN}", "{YOUR_CLIENT_ID}", "{YOUR_CLIENT_SECRET}").build();
String url = auth.authorizeUrl("https://me.auth0.com/callback")
    .withOrganization("{YOUR_ORGANIZATION_ID}")
    .build();

Important! When logging into an organization, it is important to ensure the org_id claim of the ID Token matches the expected organization value. The IdTokenVerifier can be configured with an expected org_id claim value, as the example below demonstrates. For more information, please read Work with Tokens and Organizations on Auth0 Docs.

IdTokenVerifier.init("{ISSUER}", "{AUDIENCE}", signatureVerifier)
    .withOrganization("{ORG_ID}")
    .build()
    .verify(jwt);

Accept user invitations

Accept a user invitation by using withInvitation() when building the Authorization URL:

AuthAPI auth = AuthAPI.newBuilder("{YOUR_DOMAIN}", "{YOUR_CLIENT_ID}", "{YOUR_CLIENT_SECRET}").build();
String url = auth.authorizeUrl("https://me.auth0.com/callback")
    .withOrganization("{YOUR_ORGANIZATION_ID}")
    .withInvitation("{YOUR_INVITATION_ID}")
    .build();

Asynchronous operations

Management API

The Management API provides an async client that returns CompletableFuture for all operations:

import com.auth0.client.mgmt.AsyncManagementApi;
import com.auth0.client.mgmt.core.ClientOptions;

AsyncManagementApi asyncClient = new AsyncManagementApi(clientOptions);

// Async user retrieval
CompletableFuture<GetUserResponseContent> future = asyncClient.users().get("user_id");
future.thenAccept(user -> {
    System.out.println(user.getEmail());
});

Authentication API

The Authentication API supports async operations via the executeAsync() method:

AuthAPI auth = AuthAPI.newBuilder("{YOUR_DOMAIN}", "{YOUR_CLIENT_ID}", "{YOUR_CLIENT_SECRET}").build();
CompletableFuture<TokenHolder> future = auth.requestToken("https://{YOUR_DOMAIN}/api/v2/").executeAsync();
future.thenAccept(holder -> {
    String accessToken = holder.getBody().getAccessToken();
});