How to know when a user has really released a key in Java?

Question

(Edited for clarity)

I want to detect when a user presses and releases a key in Java Swing, ignoring the keyboard auto repeat feature. I also would like a pure Java

Answer 1

Well, you said that it is possible that the time between key events in case of key repeat be non-negative. Even so, it is likely very short. You could then threshold this time to some very small value, and everything equal or lower than it be considered a key repeat.