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| <h2 title="Interface ServletContextAttributeListener" class="title">Interface ServletContextAttributeListener</h2> |
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| <pre>public interface <span class="typeNameLabel">ServletContextAttributeListener</span> |
| extends java.util.EventListener</pre> |
| <div class="block">Interface for receiving notification events about ServletContext attribute changes. |
| |
| <p> |
| In order to receive these notification events, the implementation class must be either declared in the deployment |
| descriptor of the web application, annotated with <a href="../../jakarta/servlet/annotation/WebListener.html" title="annotation in jakarta.servlet.annotation"><code>WebListener</code></a>, or registered via |
| one of the addListener methods defined on <a href="../../jakarta/servlet/ServletContext.html" title="interface in jakarta.servlet"><code>ServletContext</code></a>. |
| |
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| The order in which implementations of this interface are invoked is unspecified.</div> |
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| <dd>Servlet 2.3</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../jakarta/servlet/ServletContextAttributeEvent.html" title="class in jakarta.servlet"><code>ServletContextAttributeEvent</code></a></dd> |
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| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/ServletContextAttributeListener.html#attributeAdded-jakarta.servlet.ServletContextAttributeEvent-">attributeAdded</a></span>(<a href="../../jakarta/servlet/ServletContextAttributeEvent.html" title="class in jakarta.servlet">ServletContextAttributeEvent</a> event)</code> |
| <div class="block">Receives notification that an attribute has been added to the ServletContext.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/ServletContextAttributeListener.html#attributeRemoved-jakarta.servlet.ServletContextAttributeEvent-">attributeRemoved</a></span>(<a href="../../jakarta/servlet/ServletContextAttributeEvent.html" title="class in jakarta.servlet">ServletContextAttributeEvent</a> event)</code> |
| <div class="block">Receives notification that an attribute has been removed from the ServletContext.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>default void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../jakarta/servlet/ServletContextAttributeListener.html#attributeReplaced-jakarta.servlet.ServletContextAttributeEvent-">attributeReplaced</a></span>(<a href="../../jakarta/servlet/ServletContextAttributeEvent.html" title="class in jakarta.servlet">ServletContextAttributeEvent</a> event)</code> |
| <div class="block">Receives notification that an attribute has been replaced in the ServletContext.</div> |
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| <h4>attributeAdded</h4> |
| <pre>default void attributeAdded(<a href="../../jakarta/servlet/ServletContextAttributeEvent.html" title="class in jakarta.servlet">ServletContextAttributeEvent</a> event)</pre> |
| <div class="block">Receives notification that an attribute has been added to the ServletContext.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>event</code> - the ServletContextAttributeEvent containing the ServletContext to which the attribute was added, along |
| with the attribute name and value</dd> |
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| <pre>default void attributeRemoved(<a href="../../jakarta/servlet/ServletContextAttributeEvent.html" title="class in jakarta.servlet">ServletContextAttributeEvent</a> event)</pre> |
| <div class="block">Receives notification that an attribute has been removed from the ServletContext.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>event</code> - the ServletContextAttributeEvent containing the ServletContext from which the attribute was removed, |
| along with the attribute name and value</dd> |
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| <pre>default void attributeReplaced(<a href="../../jakarta/servlet/ServletContextAttributeEvent.html" title="class in jakarta.servlet">ServletContextAttributeEvent</a> event)</pre> |
| <div class="block">Receives notification that an attribute has been replaced in the ServletContext.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>event</code> - the ServletContextAttributeEvent containing the ServletContext in which the attribute was replaced, |
| along with the attribute name and its old value</dd> |
| </dl> |
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