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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<title>About CDI Managed Beans</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="css/style.css" rel="stylesheet">
<script src="https://use.fontawesome.com/96c4d89611.js"></script>
</head>
<body>
<table id="doc-title" cellspacing="0" cellpadding="0">
<tr>
<td align="left" valign="top">
<b>Java Platform, Enterprise Edition (Java EE) 8</b><br />
<b>The Java EE Tutorial</b>
<!-- <p class="beta">Beta Draft (Pre-General Availability)</p> -->
</td>
</tr>
</table>
<hr />
<table width="90%" id="top-nav" cellspacing="0" cellpadding="0">
<colgroup>
<col width="12%"/>
<col width="12%"/>
<col width="*"/>
</colgroup>
<tr>
<td align="left">
<a href="cdi-basic003.html">
<span class="vector-font"><i class="fa fa-arrow-circle-left" aria-hidden="true"></i></span>
<span style="position:relative;top:-2px;">Previous</span>
</a>
</td>
<td align="left">
<a href="cdi-basic005.html">
<span class=" vector-font"><i class="fa fa-arrow-circle-right vector-font" aria-hidden="true"></i></span>
<span style="position:relative;top:-2px;">Next</span>
</a>
</td>
<td align="right">
<a href="toc.html">
<span class=" vector-font"><i class="fa fa-list vector-font" aria-hidden="true"></i></span>
<span style="position:relative;top:-2px;">Contents</span>
</a>
</td>
</tr>
</table>
<div id="preamble">
<div class="sectionbody">
<div class="paragraph">
<p><a id="GJFZI"></a><a id="about-cdi-managed-beans"></a></p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_about_cdi_managed_beans">About CDI Managed Beans</h2>
<div class="sectionbody">
<div class="paragraph">
<p>A managed bean is implemented by a Java class, which is called its bean
class. A top-level Java class is a managed bean if it is defined to be a
managed bean by any other Java EE technology specification, such as the
JavaServer Faces technology specification, or if it meets all the
following conditions.</p>
</div>
<div class="ulist">
<ul>
<li>
<p>It is not a nonstatic inner class.</p>
</li>
<li>
<p>It is a concrete class or is annotated <code>@Decorator</code>.</p>
</li>
<li>
<p>It is not annotated with an EJB component-defining annotation or
declared as an EJB bean class in <code>ejb-jar.xml</code>.</p>
</li>
<li>
<p>It has an appropriate constructor. That is, one of the following is
the case.</p>
<div class="ulist">
<ul>
<li>
<p>The class has a constructor with no parameters.</p>
</li>
<li>
<p>The class declares a constructor annotated <code>@Inject</code>.</p>
</li>
</ul>
</div>
</li>
</ul>
</div>
<div class="paragraph">
<p>No special declaration, such as an annotation, is required to define a
managed bean.</p>
</div>
</div>
</div>
<hr />
<table width="90%" id="bottom-nav" cellspacing="0" cellpadding="0">
<colgroup>
<col width="12%"/>
<col width="12%"/>
<col width="*"/>
</colgroup>
<tr>
<td align="left">
<a href="cdi-basic003.html">
<span class=" vector-font"><i class="fa fa-arrow-circle-left" aria-hidden="true"></i></span>
<span style="position:relative;top:-2px;">Previous</span>
</a>
</td>
<td align="left">
<a href="cdi-basic005.html">
<span class="vector-font"><i class="fa fa-arrow-circle-right vector-font" aria-hidden="true"></i></span>
<span style="position:relative;top:-2px;">Next</span>
</a>
</td>
<td align="right">
<a href="toc.html">
<span class="vector-font"><i class="fa fa-list vector-font" aria-hidden="true"></i></span>
<span style="position:relative;top:-2px;">Contents</span>
</a>
</td>
</tr>
</table>
<span id="copyright">
<a href="img/cpyr.adoc">
<img src="img/oracle.gif" height="10px" alt="Oracle Logo" />
<span>Copyright © 2017, Oracle and/or its affiliates. All rights reserved.</span>
</a>
</span>
<!--<p align="center" class="beta">Beta Draft (Pre-General Availability)</p> -->
</body>
</html>