How to submit a Oracle Java Change Request? [closed]
Does this link help you? Anyway, you will need an account at Oracle.
The categories are "core-libs" (components) and "java.time" (subcomponent). Am just curious, what would you like to change?
UPDATE: I have now got a closer look. It seems the bug report website is not quite uptodate with Java 8, missing the possibility to specify the java.time-package. So I would instead try to choose the subcategory "java.util.*" or "JDK/JRE documentation, API, tutorials (doc)" dependent on the kind of your RFE. The categoriy should probably be "Java Platform Standard Edition (JDK/JRE)".
And notice that you can only file bug reports or RFEs, but not request for changing the API in a backwards incompatible manner.
Bug: A behavior that violates the specification. RFE: A feature that should be added to the product.Another idea:
You can try to send an issue on Threeten/Github.