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Twitter API Client Library for Java.

Note: This SDK is in beta and is not ready for production

You can find examples of using the SDK under the examples/ directory

Note: Only Twitter API V2 is supported

  • API version: 2.51

Twitter API v2 available endpoints

For more information, please visit https://developer.twitter.com/

Table of contents

Requirements

Building the API client library requires:

  1. Java 1.8+
  2. Maven (3.8.3+)/Gradle (7.2+)

Installation

To install the API client library to your local Maven repository, simply execute:

mvn clean install

To deploy it to a remote Maven repository instead, configure the settings of the repository and execute:

mvn clean deploy

Refer to the OSSRH Guide for more information.

Maven users

Add this dependency to your project's POM:

<dependency>
  <groupId>com.twitter</groupId>
  <artifactId>twitter-api-java-sdk</artifactId>
  <version>2.0.3</version>
</dependency>

Gradle users

Add this dependency to your project's build file:

repositories {
mavenCentral()     // Needed if the 'twitter-api-java-sdk' jar has been published to maven central.
mavenLocal()       // Needed if the 'twitter-api-java-sdk' jar has been published to the local maven repo.
}

dependencies {
implementation "com.twitter:twitter-api-java-sdk:2.0.3"
}

Others

At first generate the JAR by executing:

mvn clean package

Then manually install the following JARs:

  • target/twitter-api-java-sdk-2.0.3.jar
  • target/lib/*.jar

Twitter Credentials

Twitter APIs support three types of authentications:

  • OAuth 2.0 Authorization with PKCE

TWITTER_OAUTH2_CLIENT_ID

TWITTER_OAUTH2_CLIENT_SECRET

TWITTER_OAUTH2_ACCESS_TOKEN

TWITTER_OAUTH2_REFRESH_TOKEN

TWITTER_OAUTH2_IS_AUTO_REFRESH_TOKEN - default value is false

  • OAuth 2.0 Bearer Token (app-only)

TWITTER_BEARER_TOKEN

You can use the following objects in order to set the credentials: TwitterCredentialsOAuth2 & TwitterCredentialsBearer.

TwitterApi apiInstance = new TwitterApi(new TwitterCredentialsOAuth2(
      System.getenv("TWITTER_OAUTH2_CLIENT_ID"),
      System.getenv("TWITTER_OAUTH2_CLIENT_SECRET"),
      System.getenv("TWITTER_OAUTH2_ACCESS_TOKEN"),
      System.getenv("TWITTER_OAUTH2_REFRESH_TOKEN")));

Check the security tag of the required APIs in https://api.twitter.com/2/openapi.json in order to use the right credential object.

Getting Started

Please follow the installation instruction and execute the following Java code:

import java.util.HashSet;
import java.util.Set;
import com.twitter.clientlib.TwitterCredentialsOAuth2;
import com.twitter.clientlib.ApiException;
import com.twitter.clientlib.api.TwitterApi;
import com.twitter.clientlib.model.*;

public class TwitterApiExample {

  public static void main(String[] args) {
    /**
     * Set the credentials for the required APIs.
     * The Java SDK supports TwitterCredentialsOAuth2 & TwitterCredentialsBearer.
     * Check the 'security' tag of the required APIs in https://api.twitter.com/2/openapi.json in order
     * to use the right credential object.
     */
    TwitterApi apiInstance = new TwitterApi(new TwitterCredentialsOAuth2(
          System.getenv("TWITTER_OAUTH2_CLIENT_ID"),
          System.getenv("TWITTER_OAUTH2_CLIENT_SECRET"),
          System.getenv("TWITTER_OAUTH2_ACCESS_TOKEN"),
          System.getenv("TWITTER_OAUTH2_REFRESH_TOKEN")));

    Set<String> tweetFields = new HashSet<>();
    tweetFields.add("author_id");
    tweetFields.add("id");
    tweetFields.add("created_at");

    try {
     // findTweetById
     Get2TweetsIdResponse result = apiInstance.tweets().findTweetById("20")
       .tweetFields(tweetFields)
       .execute();
     if(result.getErrors() != null && result.getErrors().size() > 0) {
       System.out.println("Error:");

       result.getErrors().forEach(e -> {
         System.out.println(e.toString());
         if (e instanceof ResourceUnauthorizedProblem) {
           System.out.println(((ResourceUnauthorizedProblem) e).getTitle() + " " + ((ResourceUnauthorizedProblem) e).getDetail());
         }
       });
     } else {
       System.out.println("findTweetById - Tweet Text: " + result.toString());
     }
    } catch (ApiException e) {
      System.err.println("Status code: " + e.getCode());
      System.err.println("Reason: " + e.getResponseBody());
      System.err.println("Response headers: " + e.getResponseHeaders());
      e.printStackTrace();
    }
  }
}

Authentication

The Twitter API has multiple authentication methods that support different endpoints. To see what method an endpoint needs go here.

This library has support for OAuth 2.0, use TwitterOAuth20Service in order to get the OAuth 2.0 services. You can see various examples on how to use the authentication in examples/

Auto Refresh Token

By default the OAuth 2.0 access token should be maintained and refreshed by the user.

In order to change it to be automatically refreshed, set the TwitterCredentialsOAuth2.isOAuth2AutoRefreshToken to be true.

You can implement the callback ApiClientCallback.onAfterRefreshToken() in order to maintain the refreshed access token.

Check this example of implementing ApiClientCallback

Rate limits retry mechanism

Everyday many thousands of developers make requests to the Twitter developer platform. To help manage the sheer volume of these requests, limits are placed on the number of requests that can be made. These limits help us provide the reliable and scalable API that our developer community relies on.

Each of our APIs use rate limits in different ways. To learn more about these differences between platforms, please review the specific rate limit pages within our specific API sections.

To check connection limits response will return three headers. This is useful to understand how many times you can use the rule endpoint, and how many reconnections attempts are allowed for the streaming endpoint.

The Java SDK provides APIs with a build-in retry mechanism to handle the rate limits. In case of getting an http error code 429, the API will check the response headers and will wait until the rate limit is reset.

In order to use the retry mechanism call the APIs with an additional parameter retries as a first argument, check the following example:

  int retries = 4;
  streamResult = apiInstance.tweets().sampleStream()
                      .tweetFields(tweetFields)
                      .execute(retries);

Read more about Filtered stream and rate limits

Get all fields

The Twitter API v2 endpoints are equipped with a set of parameters called fields, which allows you to select just the data that you want from each of the objects in your endpoint response.

When you need to get many fields in the response object it can be a bit gruelling to define all the needed fields. In order to make it easier, you can use the excludeInputFields approach. Instead of selecting the data that you want to get, you define which fields should be excluded from the response object. Using excludeInputFields() will change the behaviour of the execution, in this case all response fields will be returned besides the ones that were sent as input parameters.

    Set<String> tweetFields = new HashSet<>();
    tweetFields.add("non_public_metrics");
    tweetFields.add("promoted_metrics");
    tweetFields.add("organic_metrics");

    // Get all available fields excluding Tweet Fields `non_public_metrics`, `promoted_metrics` & `organic_metrics`
    Get2TweetsIdResponse result = apiInstance.tweets().findTweetById("20")
        .tweetFields(tweetFields).excludeInputFields().execute();

    // Get all the response fields
    Get2TweetsIdResponse result2 = apiInstance.tweets().findTweetById("20").excludeInputFields().execute();

Documentation for API Endpoints

All URIs are relative to https://api.twitter.com

Class Method HTTP request Description
BookmarksApi getUsersIdBookmarks GET /2/users/{id}/bookmarks Bookmarks by User
BookmarksApi postUsersIdBookmarks POST /2/users/{id}/bookmarks Add Tweet to Bookmarks
BookmarksApi usersIdBookmarksDelete DELETE /2/users/{id}/bookmarks/{tweet_id} Remove a bookmarked Tweet
ComplianceApi createBatchComplianceJob POST /2/compliance/jobs Create compliance job
ComplianceApi getBatchComplianceJob GET /2/compliance/jobs/{id} Get Compliance Job
ComplianceApi getTweetsComplianceStream GET /2/tweets/compliance/stream Tweets Compliance stream
ComplianceApi getUsersComplianceStream GET /2/users/compliance/stream Users Compliance stream
ComplianceApi listBatchComplianceJobs GET /2/compliance/jobs List Compliance Jobs
GeneralApi getOpenApiSpec GET /2/openapi.json Returns the OpenAPI Specification document.
ListsApi getUserListMemberships GET /2/users/{id}/list_memberships Get a User's List Memberships
ListsApi listAddMember POST /2/lists/{id}/members Add a List member
ListsApi listIdCreate POST /2/lists Create List
ListsApi listIdDelete DELETE /2/lists/{id} Delete List
ListsApi listIdGet GET /2/lists/{id} List lookup by List ID.
ListsApi listIdUpdate PUT /2/lists/{id} Update List.
ListsApi listRemoveMember DELETE /2/lists/{id}/members/{user_id} Remove a List member
ListsApi listUserFollow POST /2/users/{id}/followed_lists Follow a List
ListsApi listUserOwnedLists GET /2/users/{id}/owned_lists Get a User's Owned Lists.
ListsApi listUserPin POST /2/users/{id}/pinned_lists Pin a List
ListsApi listUserPinnedLists GET /2/users/{id}/pinned_lists Get a User's Pinned Lists
ListsApi listUserUnfollow DELETE /2/users/{id}/followed_lists/{list_id} Unfollow a List
ListsApi listUserUnpin DELETE /2/users/{id}/pinned_lists/{list_id} Unpin a List
ListsApi userFollowedLists GET /2/users/{id}/followed_lists Get User's Followed Lists
SpacesApi findSpaceById GET /2/spaces/{id} Space lookup by Space ID
SpacesApi findSpacesByCreatorIds GET /2/spaces/by/creator_ids Space lookup by their creators
SpacesApi findSpacesByIds GET /2/spaces Space lookup up Space IDs
SpacesApi searchSpaces GET /2/spaces/search Search for Spaces
SpacesApi spaceBuyers GET /2/spaces/{id}/buyers Retrieve the list of Users who purchased a ticket to the given space
SpacesApi spaceTweets GET /2/spaces/{id}/tweets Retrieve Tweets from a Space.
TweetsApi addOrDeleteRules POST /2/tweets/search/stream/rules Add/Delete rules
TweetsApi createTweet POST /2/tweets Creation of a Tweet
TweetsApi deleteTweetById DELETE /2/tweets/{id} Tweet delete by Tweet ID
TweetsApi findTweetById GET /2/tweets/{id} Tweet lookup by Tweet ID
TweetsApi findTweetsById GET /2/tweets Tweet lookup by Tweet IDs
TweetsApi findTweetsThatQuoteATweet GET /2/tweets/{id}/quote_tweets Retrieve Tweets that quote a Tweet.
TweetsApi getRules GET /2/tweets/search/stream/rules Rules lookup
TweetsApi getTweetsFirehoseStream GET /2/tweets/firehose/stream Firehose stream
TweetsApi getTweetsSample10Stream GET /2/tweets/sample10/stream Sample 10% stream
TweetsApi hideReplyById PUT /2/tweets/{tweet_id}/hidden Hide replies
TweetsApi listsIdTweets GET /2/lists/{id}/tweets List Tweets timeline by List ID.
TweetsApi sampleStream GET /2/tweets/sample/stream Sample stream
TweetsApi searchStream GET /2/tweets/search/stream Filtered stream
TweetsApi spaceBuyers GET /2/spaces/{id}/buyers Retrieve the list of Users who purchased a ticket to the given space
TweetsApi spaceTweets GET /2/spaces/{id}/tweets Retrieve Tweets from a Space.
TweetsApi tweetCountsFullArchiveSearch GET /2/tweets/counts/all Full archive search counts
TweetsApi tweetCountsRecentSearch GET /2/tweets/counts/recent Recent search counts
TweetsApi tweetsFullarchiveSearch GET /2/tweets/search/all Full-archive search
TweetsApi tweetsRecentSearch GET /2/tweets/search/recent Recent search
TweetsApi usersIdLike POST /2/users/{id}/likes Causes the User (in the path) to like the specified Tweet
TweetsApi usersIdLikedTweets GET /2/users/{id}/liked_tweets Returns Tweet objects liked by the provided User ID
TweetsApi usersIdMentions GET /2/users/{id}/mentions User mention timeline by User ID
TweetsApi usersIdRetweets POST /2/users/{id}/retweets Causes the User (in the path) to retweet the specified Tweet.
TweetsApi usersIdTimeline GET /2/users/{id}/timelines/reverse_chronological User home timeline by User ID
TweetsApi usersIdTweets GET /2/users/{id}/tweets User Tweets timeline by User ID
TweetsApi usersIdUnlike DELETE /2/users/{id}/likes/{tweet_id} Causes the User (in the path) to unlike the specified Tweet
TweetsApi usersIdUnretweets DELETE /2/users/{id}/retweets/{source_tweet_id} Causes the User (in the path) to unretweet the specified Tweet
UsersApi findMyUser GET /2/users/me User lookup me
UsersApi findUserById GET /2/users/{id} User lookup by ID
UsersApi findUserByUsername GET /2/users/by/username/{username} User lookup by username
UsersApi findUsersById GET /2/users User lookup by IDs
UsersApi findUsersByUsername GET /2/users/by User lookup by usernames
UsersApi listGetFollowers GET /2/lists/{id}/followers Returns User objects that follow a List by the provided List ID
UsersApi listGetMembers GET /2/lists/{id}/members Returns User objects that are members of a List by the provided List ID.
UsersApi tweetsIdLikingUsers GET /2/tweets/{id}/liking_users Returns User objects that have liked the provided Tweet ID
UsersApi tweetsIdRetweetingUsers GET /2/tweets/{id}/retweeted_by Returns User objects that have retweeted the provided Tweet ID
UsersApi usersIdBlock POST /2/users/{id}/blocking Block User by User ID
UsersApi usersIdBlocking GET /2/users/{id}/blocking Returns User objects that are blocked by provided User ID
UsersApi usersIdFollow POST /2/users/{id}/following Follow User
UsersApi usersIdFollowers GET /2/users/{id}/followers Followers by User ID
UsersApi usersIdFollowing GET /2/users/{id}/following Following by User ID
UsersApi usersIdMute POST /2/users/{id}/muting Mute User by User ID.
UsersApi usersIdMuting GET /2/users/{id}/muting Returns User objects that are muted by the provided User ID
UsersApi usersIdUnblock DELETE /2/users/{source_user_id}/blocking/{target_user_id} Unblock User by User ID
UsersApi usersIdUnfollow DELETE /2/users/{source_user_id}/following/{target_user_id} Unfollow User
UsersApi usersIdUnmute DELETE /2/users/{source_user_id}/muting/{target_user_id} Unmute User by User ID

Documentation for Models

About

A Java SDK for the Twitter API

developer.twitter.com/en/docs/twitter-api

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Apache-2.0 license

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