We currently have two official Twitter supported and maintained Ads API SDKs - for Ruby and Python. We are working on releasing, supporting and maintaining a Java SDK. Any officially supported SDKs or tools relevant to the Twitter Ads API will always be released under the TwitterDev GitHub organization.
Some community members have expressed an interest in developing SDKs for other languages that we are not currently planning to create officially supported SDKs for. If this is of interest to you, keep an eye in the forums for such conversations if you’d like to be involved or simply make use of a community-created SDK.