Use latest JDK

[cowwoc]

Hello!

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Issue details

What is the justification for using an 8 year-old JDK version for pulumi-Java?

Given that Pulumi is used by developers, not end-users, why wouldn't you use the latest JDK version? This would enable the use of new features and technologies that would speed up development, result in cleaner code, and might even improve performance.

[justinvp]

We internally build with Java 11 so that we can support users on 11+. If we used a newer version to build our SDKs, we would prevent users of older versions from using our library - which limits our addressable audience unnecessarily.

Users can use anything they want that is 11+ and we recommend they use the latest version they can.

[cowwoc]

Your call. Feel free to close this issue if this decision is final.