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<div class="subTitle">org.jgrapht.alg</div>
<h2 title="Class ConnectivityInspector" class="title">Class ConnectivityInspector&lt;V,E&gt;</h2>
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<ul class="inheritance">
<li><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
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<li>org.jgrapht.alg.ConnectivityInspector&lt;V,E&gt;</li>
</ul>
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<dl>
<dt>All Implemented Interfaces:</dt>
<dd><a href="http://docs.oracle.com/javase/7/docs/api/java/util/EventListener.html?is-external=true" title="class or interface in java.util">EventListener</a>, <a href="../../../org/jgrapht/event/GraphListener.html" title="interface in org.jgrapht.event">GraphListener</a>&lt;V,E&gt;, <a href="../../../org/jgrapht/event/VertexSetListener.html" title="interface in org.jgrapht.event">VertexSetListener</a>&lt;V&gt;</dd>
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<pre>public class <span class="strong">ConnectivityInspector&lt;V,E&gt;</span>
extends <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
implements <a href="../../../org/jgrapht/event/GraphListener.html" title="interface in org.jgrapht.event">GraphListener</a>&lt;V,E&gt;</pre>
<div class="block">Allows obtaining various connectivity aspects of a graph. The <i>inspected
graph</i> is specified at construction time and cannot be modified.
Currently, the inspector supports connected components for an undirected
graph and weakly connected components for a directed graph. To find strongly
connected components, use <a href="../../../org/jgrapht/alg/KosarajuStrongConnectivityInspector.html" title="class in org.jgrapht.alg"><code>KosarajuStrongConnectivityInspector</code></a>
instead.
<p>The inspector methods work in a lazy fashion: no computation is performed
unless immediately necessary. Computation are done once and results and
cached within this class for future need.</p>
<p>The inspector is also a <a href="../../../org/jgrapht/event/GraphListener.html" title="interface in org.jgrapht.event"><code>GraphListener</code></a>. If added
as a listener to the inspected graph, the inspector will amend internal
cached results instead of recomputing them. It is efficient when a few
modifications are applied to a large graph. If many modifications are
expected it will not be efficient due to added overhead on graph update
operations. If inspector is added as listener to a graph other than the one
it inspects, results are undefined.</p></div>
<dl><dt><span class="strong">Since:</span></dt>
<dd>Aug 6, 2003</dd>
<dt><span class="strong">Author:</span></dt>
<dd>Barak Naveh, John V. Sichi</dd></dl>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../org/jgrapht/alg/ConnectivityInspector.html#ConnectivityInspector(org.jgrapht.DirectedGraph)">ConnectivityInspector</a></strong>(<a href="../../../org/jgrapht/DirectedGraph.html" title="interface in org.jgrapht">DirectedGraph</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>,<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">E</a>&gt;&nbsp;g)</code>
<div class="block">Creates a connectivity inspector for the specified directed graph.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../org/jgrapht/alg/ConnectivityInspector.html#ConnectivityInspector(org.jgrapht.UndirectedGraph)">ConnectivityInspector</a></strong>(<a href="../../../org/jgrapht/UndirectedGraph.html" title="interface in org.jgrapht">UndirectedGraph</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>,<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">E</a>&gt;&nbsp;g)</code>
<div class="block">Creates a connectivity inspector for the specified undirected graph.</div>
</td>
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<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<tr class="altColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&gt;</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/alg/ConnectivityInspector.html#connectedSetOf(V)">connectedSetOf</a></strong>(<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&nbsp;vertex)</code>
<div class="block">Returns a set of all vertices that are in the maximally connected
component together with the specified vertex.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&gt;&gt;</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/alg/ConnectivityInspector.html#connectedSets()">connectedSets</a></strong>()</code>
<div class="block">Returns a list of <code>Set</code> s, where each set contains all
vertices that are in the same maximally connected component.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/alg/ConnectivityInspector.html#edgeAdded(org.jgrapht.event.GraphEdgeChangeEvent)">edgeAdded</a></strong>(<a href="../../../org/jgrapht/event/GraphEdgeChangeEvent.html" title="class in org.jgrapht.event">GraphEdgeChangeEvent</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>,<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">E</a>&gt;&nbsp;e)</code>
<div class="block">Notifies that an edge has been added to the graph.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/alg/ConnectivityInspector.html#edgeRemoved(org.jgrapht.event.GraphEdgeChangeEvent)">edgeRemoved</a></strong>(<a href="../../../org/jgrapht/event/GraphEdgeChangeEvent.html" title="class in org.jgrapht.event">GraphEdgeChangeEvent</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>,<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">E</a>&gt;&nbsp;e)</code>
<div class="block">Notifies that an edge has been removed from the graph.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/alg/ConnectivityInspector.html#isGraphConnected()">isGraphConnected</a></strong>()</code>
<div class="block">Test if the inspected graph is connected.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/alg/ConnectivityInspector.html#pathExists(V,%20V)">pathExists</a></strong>(<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&nbsp;sourceVertex,
<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&nbsp;targetVertex)</code>
<div class="block">Tests if there is a path from the specified source vertex to the
specified target vertices.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/alg/ConnectivityInspector.html#vertexAdded(org.jgrapht.event.GraphVertexChangeEvent)">vertexAdded</a></strong>(<a href="../../../org/jgrapht/event/GraphVertexChangeEvent.html" title="class in org.jgrapht.event">GraphVertexChangeEvent</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&gt;&nbsp;e)</code>
<div class="block">Notifies that a vertex has been added to the graph.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/alg/ConnectivityInspector.html#vertexRemoved(org.jgrapht.event.GraphVertexChangeEvent)">vertexRemoved</a></strong>(<a href="../../../org/jgrapht/event/GraphVertexChangeEvent.html" title="class in org.jgrapht.event">GraphVertexChangeEvent</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&gt;&nbsp;e)</code>
<div class="block">Notifies that a vertex has been removed from the graph.</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long,%20int)" title="class or interface in java.lang">wait</a></code></li>
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<h4>ConnectivityInspector</h4>
<pre>public&nbsp;ConnectivityInspector(<a href="../../../org/jgrapht/UndirectedGraph.html" title="interface in org.jgrapht">UndirectedGraph</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>,<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">E</a>&gt;&nbsp;g)</pre>
<div class="block">Creates a connectivity inspector for the specified undirected graph.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>g</code> - the graph for which a connectivity inspector to be created.</dd></dl>
</li>
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<a name="ConnectivityInspector(org.jgrapht.DirectedGraph)">
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<h4>ConnectivityInspector</h4>
<pre>public&nbsp;ConnectivityInspector(<a href="../../../org/jgrapht/DirectedGraph.html" title="interface in org.jgrapht">DirectedGraph</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>,<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">E</a>&gt;&nbsp;g)</pre>
<div class="block">Creates a connectivity inspector for the specified directed graph.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>g</code> - the graph for which a connectivity inspector to be created.</dd></dl>
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<h4>isGraphConnected</h4>
<pre>public&nbsp;boolean&nbsp;isGraphConnected()</pre>
<div class="block">Test if the inspected graph is connected. An empty graph is <i>not</i>
considered connected.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd><code>true</code> if and only if inspected graph is connected.</dd></dl>
</li>
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<h4>connectedSetOf</h4>
<pre>public&nbsp;<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&gt;&nbsp;connectedSetOf(<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&nbsp;vertex)</pre>
<div class="block">Returns a set of all vertices that are in the maximally connected
component together with the specified vertex. For more on maximally
connected component, see <a
href="http://www.nist.gov/dads/HTML/maximallyConnectedComponent.html">
http://www.nist.gov/dads/HTML/maximallyConnectedComponent.html</a>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>vertex</code> - the vertex for which the connected set to be returned.</dd>
<dt><span class="strong">Returns:</span></dt><dd>a set of all vertices that are in the maximally connected
component together with the specified vertex.</dd></dl>
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<h4>connectedSets</h4>
<pre>public&nbsp;<a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&gt;&gt;&nbsp;connectedSets()</pre>
<div class="block">Returns a list of <code>Set</code> s, where each set contains all
vertices that are in the same maximally connected component. All graph
vertices occur in exactly one set. For more on maximally connected
component, see <a
href="http://www.nist.gov/dads/HTML/maximallyConnectedComponent.html">
http://www.nist.gov/dads/HTML/maximallyConnectedComponent.html</a>.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>Returns a list of <code>Set</code> s, where each set contains all
vertices that are in the same maximally connected component.</dd></dl>
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<h4>edgeAdded</h4>
<pre>public&nbsp;void&nbsp;edgeAdded(<a href="../../../org/jgrapht/event/GraphEdgeChangeEvent.html" title="class in org.jgrapht.event">GraphEdgeChangeEvent</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>,<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">E</a>&gt;&nbsp;e)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/jgrapht/event/GraphListener.html#edgeAdded(org.jgrapht.event.GraphEdgeChangeEvent)">GraphListener</a></code></strong></div>
<div class="block">Notifies that an edge has been added to the graph.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/jgrapht/event/GraphListener.html#edgeAdded(org.jgrapht.event.GraphEdgeChangeEvent)">edgeAdded</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/jgrapht/event/GraphListener.html" title="interface in org.jgrapht.event">GraphListener</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>,<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">E</a>&gt;</code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>e</code> - the edge event.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/jgrapht/event/GraphListener.html#edgeAdded(org.jgrapht.event.GraphEdgeChangeEvent)"><code>GraphListener.edgeAdded(GraphEdgeChangeEvent)</code></a></dd></dl>
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<h4>edgeRemoved</h4>
<pre>public&nbsp;void&nbsp;edgeRemoved(<a href="../../../org/jgrapht/event/GraphEdgeChangeEvent.html" title="class in org.jgrapht.event">GraphEdgeChangeEvent</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>,<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">E</a>&gt;&nbsp;e)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/jgrapht/event/GraphListener.html#edgeRemoved(org.jgrapht.event.GraphEdgeChangeEvent)">GraphListener</a></code></strong></div>
<div class="block">Notifies that an edge has been removed from the graph.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/jgrapht/event/GraphListener.html#edgeRemoved(org.jgrapht.event.GraphEdgeChangeEvent)">edgeRemoved</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/jgrapht/event/GraphListener.html" title="interface in org.jgrapht.event">GraphListener</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>,<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">E</a>&gt;</code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>e</code> - the edge event.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/jgrapht/event/GraphListener.html#edgeRemoved(org.jgrapht.event.GraphEdgeChangeEvent)"><code>GraphListener.edgeRemoved(GraphEdgeChangeEvent)</code></a></dd></dl>
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<h4>pathExists</h4>
<pre>public&nbsp;boolean&nbsp;pathExists(<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&nbsp;sourceVertex,
<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&nbsp;targetVertex)</pre>
<div class="block">Tests if there is a path from the specified source vertex to the
specified target vertices. For a directed graph, direction is ignored for
this interpretation of path.
<p>Note: Future versions of this method might not ignore edge directions
for directed graphs.</p></div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>sourceVertex</code> - one end of the path.</dd><dd><code>targetVertex</code> - another end of the path.</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>true</code> if and only if there is a path from the source
vertex to the target vertex.</dd></dl>
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<h4>vertexAdded</h4>
<pre>public&nbsp;void&nbsp;vertexAdded(<a href="../../../org/jgrapht/event/GraphVertexChangeEvent.html" title="class in org.jgrapht.event">GraphVertexChangeEvent</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&gt;&nbsp;e)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/jgrapht/event/VertexSetListener.html#vertexAdded(org.jgrapht.event.GraphVertexChangeEvent)">VertexSetListener</a></code></strong></div>
<div class="block">Notifies that a vertex has been added to the graph.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/jgrapht/event/VertexSetListener.html#vertexAdded(org.jgrapht.event.GraphVertexChangeEvent)">vertexAdded</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/jgrapht/event/VertexSetListener.html" title="interface in org.jgrapht.event">VertexSetListener</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&gt;</code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>e</code> - the vertex event.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/jgrapht/event/VertexSetListener.html#vertexAdded(org.jgrapht.event.GraphVertexChangeEvent)"><code>VertexSetListener.vertexAdded(GraphVertexChangeEvent)</code></a></dd></dl>
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<h4>vertexRemoved</h4>
<pre>public&nbsp;void&nbsp;vertexRemoved(<a href="../../../org/jgrapht/event/GraphVertexChangeEvent.html" title="class in org.jgrapht.event">GraphVertexChangeEvent</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&gt;&nbsp;e)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/jgrapht/event/VertexSetListener.html#vertexRemoved(org.jgrapht.event.GraphVertexChangeEvent)">VertexSetListener</a></code></strong></div>
<div class="block">Notifies that a vertex has been removed from the graph.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/jgrapht/event/VertexSetListener.html#vertexRemoved(org.jgrapht.event.GraphVertexChangeEvent)">vertexRemoved</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/jgrapht/event/VertexSetListener.html" title="interface in org.jgrapht.event">VertexSetListener</a>&lt;<a href="../../../org/jgrapht/alg/ConnectivityInspector.html" title="type parameter in ConnectivityInspector">V</a>&gt;</code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>e</code> - the vertex event.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/jgrapht/event/VertexSetListener.html#vertexRemoved(org.jgrapht.event.GraphVertexChangeEvent)"><code>VertexSetListener.vertexRemoved(GraphVertexChangeEvent)</code></a></dd></dl>
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