== Why is this an issue? The Java Persistence API specification imposes only a conditional requirement that ``++@Entity++`` classes be ``++Serializable++``: ____ If an entity instance is to be passed by value as a detached object (e.g., through a remote interface), the entity class must implement the ``++Serializable++`` interface. ____ But it's best practice to make all such classes ``++Serializable++`` from the start. So this rule raises an issue when an ``++@Entity++`` does not implement ``++Serializable++``. === Noncompliant code example [source,java] ---- @Entity pubic class Person { // Noncompliant private String fname; // ... ---- === Compliant solution [source,java] ---- @Entity pubic class Person implements Serializable { private String fname; // ... ---- ifdef::env-github,rspecator-view[] ''' == Implementation Specification (visible only on this page) === Message Make this class "Serialiazable". === Highlighting class name ''' == Comments And Links (visible only on this page) === on 1 Dec 2015, 11:14:17 Michael Gumowski wrote: LGTM! endif::env-github,rspecator-view[]