Struts 2 claims that "actions can be POJOs". Developers find out pretty quickly that not extending ActionSupport means you lose some Struts 2 functionality (primarily I18N and validation).
One source of confusion is what "POJO" means. POJOs don't mean you don't extend a base class. POJOs are classes not directly tied to unrelated libraries, specifications, etc. For example, Struts 1 actions were
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