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<h1 title="Package" class="title">Package javafx.beans</h1>
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<div class="block">The package <code>javafx.beans</code> contains the interfaces that
define the most generic form of observability.</div>
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<p>See: <a href="#package.description">Description</a></p>
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<th class="colFirst" scope="col">Interface</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><a href="../../javafx/beans/InvalidationListener.html" title="interface in javafx.beans">InvalidationListener</a></td>
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<div class="block">An <code>InvalidationListener</code> is notified whenever an
<a href="../../javafx/beans/Observable.html" title="interface in javafx.beans"><code>Observable</code></a> becomes invalid.</div>
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<td class="colFirst"><a href="../../javafx/beans/Observable.html" title="interface in javafx.beans">Observable</a></td>
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<div class="block">An <code>Observable</code> is an entity that wraps content and allows to
observe the content for invalidations.</div>
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<td class="colFirst"><a href="../../javafx/beans/WeakListener.html" title="interface in javafx.beans">WeakListener</a></td>
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<div class="block"><code>WeakListener</code> is the super interface of all weak listener implementations
JavaFX runtime.</div>
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<td class="colFirst"><a href="../../javafx/beans/WeakInvalidationListener.html" title="class in javafx.beans">WeakInvalidationListener</a></td>
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<div class="block">A <code>WeakInvalidationListener</code> can be used, if an <a href="../../javafx/beans/Observable.html" title="interface in javafx.beans"><code>Observable</code></a>
should only maintain a weak reference to the listener.</div>
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<td class="colFirst"><a href="../../javafx/beans/DefaultProperty.html" title="annotation in javafx.beans">DefaultProperty</a></td>
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<div class="block">Specifies a property to which child elements will be added or set when an
explicit property is not given.</div>
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<td class="colFirst"><a href="../../javafx/beans/NamedArg.html" title="annotation in javafx.beans">NamedArg</a></td>
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<div class="block">Annotation that provides information about argument's name.</div>
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<h2 title="Package javafx.beans Description">Package javafx.beans Description</h2>
<div class="block"><p>The package <code>javafx.beans</code> contains the interfaces that
define the most generic form of observability. All other classes in
the JavaFX library, that are observable, extend the <a href="../../javafx/beans/Observable.html" title="interface in javafx.beans"><code>Observable</code></a>
interface.</p>
<p>An implementation of <code>Observable</code> allows to attach an
<a href="../../javafx/beans/InvalidationListener.html" title="interface in javafx.beans"><code>InvalidationListener</code></a>. The contentBinding gets notified every time
the <code>Observable</code> may have changed. Typical implementations of
<code>Observable</code> are all properties, all bindings, <a href="../../javafx/collections/ObservableList.html" title="interface in javafx.collections"><code>ObservableList</code></a>, and <a href="../../javafx/collections/ObservableMap.html" title="interface in javafx.collections"><code>ObservableMap</code></a>.</p>
<p>An <code>InvalidationListener</code> will get no further information,
e.g. it will not get the old and the new value of a property. If you
need more information consider using a <a href="../../javafx/beans/value/ChangeListener.html" title="interface in javafx.beans.value"><code>ChangeListener</code></a> for properties and bindings, <a href="../../javafx/collections/ListChangeListener.html" title="interface in javafx.collections"><code>ListChangeListener</code></a> for <code>ObservableLists</code> or
<a href="../../javafx/collections/MapChangeListener.html" title="interface in javafx.collections"><code>MapChangeListener</code></a> for <code>ObservableMap</code>
instead.</p></div>
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<p class="legalCopy"><small><font size="-1"><a href="http://bugreport.java.com/bugreport/" target="_blank">Submit a bug or feature</a><br>For further API reference and developer documentation, see <a href="https://docs.oracle.com/javase/8/docs/index.html" target="_blank">Java SE Documentation</a>. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.<br> <a href="https://docs.oracle.com/javase/8/docs/legal/cpyr.html" target="_blank">Copyright</a> © 2008, 2017, Oracle and/or its affiliates. All rights reserved. Use is subject to <a href="http://download.oracle.com/otndocs/jcp/java_se-8-mrel-spec/license.html" target="_blank">license terms</a>. Also see the <a target="_blank" href="http://www.oracle.com/technetwork/java/redist-137594.html" target="_blank">documentation redistribution policy</a>.</font></small></p>
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