I cannot really paste a piece of my code - seeing as I'm trying to upgrade Micronaut from 3.0.3 to 3.1.0 in a fairly big & complex application. That being said, I should be able to explain it. After ...

JDK 1 introduced java.util.date and java.sql.date Calendar class also use in java Date is immutable class in java Java 8 introduced new package java.time, it completely replace the Date and Calendar ...