Javadoc uses yyyy for year since at least 1.5 https://docs.oracle.com/javase/1.5.0/docs/api/java/text/SimpleDateFormat.html https://docs.oracle.com/javase/1.5.

Javadoc uses yyyy for year since at least 1.5 https://docs.oracle.com/javase/1.5.0/docs/api/java/text/SimpleDateFormat.html https://docs.oracle.com/javase/1.5.0/docs/api/java/text/Simp... I've never seen YYYY used in Java.