Just Java? That seems bizarre. There's so many more languages now days than just Java. I would love for Swift to take off. Don't get me wrong there is a lot in the Java ecosystem, but it's age is showing. And it's not lightweight. If I'm trying to spawn processes quickly it's not Java. If I want to run 100 instances of something, the RAM is going to cost me. JS and other fast to boot languages are also much more adaptable to serverless.

Now I'm not saying there's no room for Java any more, but "just Java" meeeeeeh.