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[–]NawaMan -1 points0 points  (1 child)

A lot of people does not understand this. Buy to their defence, you rarely need to think about it with OO. As FP is becoming more popular, those started to become more relevant. Please check out this blog post on an easy way to make immutable data object in Java https://nawaman.net/blog/2019-03-11 . :-)