Move fast and break things does not describe Java well at all.

Their process is still very deliberate, they go to some lengths to avoid getting it wrong when they add new features to the standard. New features have to get through their preview phase successfully before becoming final. [0]

They're also pretty committed to not breaking existing source code or bytecode.

[0] https://openjdk.org/jeps/12 JEP 12: Preview Features