It seems like the user is looking for a Java client to interact with the Upstash Vector DB. However, I couldn't find any information on a specific "Vector" or "Vector HD" or "Vector PNG" related to Upstash.

But, I found that there's an @upstash/vector package available on NPM Registry, which is an HTTP/REST based Vector DB client built on top of Upstash REST API.

To download the Java client for the Upstash Vector DB, you can use the following command:

npm install @upstash/vector

This will download the @upstash/vector package as a JAR file.

If you're looking for specific formats like HD or PNG, I couldn't find any information on that. The @upstash/vector package seems to provide vector data in various formats, but it's not clear if there are separate packages for HD or PNG specifically.

Please note that the availability and format of the data may vary depending on the version of the package you install.