.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/IllegalStateException.html?is-external=true" title="class or interface in java.lang" class="externalLink">IllegalStateException</a></code> - if the entity manager factory
 has been closed</dd>
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<h4>createEntityManager</h4>
<pre class="methodSignature"><a href="EntityManager.html" title="interface in jak