https://javapro-en.svenruppert.com/tags/serialization/Recent content in Serialization on JAVAPRO InternationalHugoen-USTue, 26 May 2026 07:00:00 +0000https://javapro-en.svenruppert.com/destructoring-is-the-future-of-javas-encapsulation/Tue, 26 May 2026 07:00:00 +0000https://javapro-en.svenruppert.com/destructoring-is-the-future-of-javas-encapsulation/<p>Encapsulation in Java has been broken <a href="https://openjdk.org/jeps/500#Serialization-libraries-should-use-sun-reflect-ReflectionFactory">since the Java Development Kit (JDK) 5</a>. Objects <em>should</em> guarantee that their inner state matches what we cast into code, but at runtime any <code>private</code> and <code>final</code> state can be set from the outside to any value — bypassing any checks and asserts. This is possible through the Reflection Api, which allows to <code>setAccessible</code> any <code>private</code> field and then <code>set</code> the value of any <code>final</code> field. This specific use of the Reflection Api to mutate an immutable <code>final</code> field is called <em>deep reflection</em>.</p>