The Maven Central repository for JVM dependencies doesn't share the problem of packages being removed like NPM periodically has, but Adam Bien has been instruct

The Maven Central repository for JVM dependencies doesn't share the problem of packages being removed like NPM periodically has, but Adam Bien has been instructing users to download the source-code for their dependencies and then compile them to their own repositories for quite a few years. I wish I'd taken his advice as there are a couple of JAR files that I can no longer update.