Talk:Plain old Java object

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Definition

The Definition section outlines 3 things a POJO should not do:

Extend prespecified classes.
Implement prespecified interfaces.
Contain prespecified annotations.

What is the source for these requirements? Also, in what sense is "prespecified" being used? What makes an annotation prespecified as such - does it mean a requirement imposed by an external framework?

jon (talk) 20:57, 20 December 2015 (UTC)[reply]