I want to build a Java application to access the OpenStack services like the Identity Service (username, password, secret key, etc), Nova service (create and remove virtual machines, etc) and Swift service (upload and download files, etc).
I set up OpenStack Cloud in three machines and downloaded the Java SDK files to access the cloud resources from this link https://github.com/woorea/openstack-java-sdk
I need simple Java code to access the usernames that have registered in the cloud.
There is a project on github (CloudServiceDeployer) handling almost what you were asking for.
Take a more closer view to the classes below