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<div class="subTitle">org.jgrapht.traverse</div>
<h2 title="Class CrossComponentIterator" class="title">Class CrossComponentIterator&lt;V,E,D&gt;</h2>
</div>
<div class="contentContainer">
<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><a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html" title="class in org.jgrapht.traverse">org.jgrapht.traverse.AbstractGraphIterator</a>&lt;V,E&gt;</li>
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<ul class="inheritance">
<li>org.jgrapht.traverse.CrossComponentIterator&lt;V,E,D&gt;</li>
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<dl><dt><span class="strong">Type Parameters:</span></dt><dd><code>V</code> - vertex type</dd><dd><code>E</code> - edge type</dd><dd><code>D</code> - type of data associated to seen vertices</dd></dl>
<dl>
<dt>All Implemented Interfaces:</dt>
<dd><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;V&gt;, <a href="../../../org/jgrapht/traverse/GraphIterator.html" title="interface in org.jgrapht.traverse">GraphIterator</a>&lt;V,E&gt;</dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../org/jgrapht/traverse/BreadthFirstIterator.html" title="class in org.jgrapht.traverse">BreadthFirstIterator</a>, <a href="../../../org/jgrapht/traverse/ClosestFirstIterator.html" title="class in org.jgrapht.traverse">ClosestFirstIterator</a>, <a href="../../../org/jgrapht/traverse/DepthFirstIterator.html" title="class in org.jgrapht.traverse">DepthFirstIterator</a>, <a href="../../../org/jgrapht/traverse/TopologicalOrderIterator.html" title="class in org.jgrapht.traverse">TopologicalOrderIterator</a></dd>
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<hr>
<br>
<pre>public abstract class <span class="strong">CrossComponentIterator&lt;V,E,D&gt;</span>
extends <a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html" title="class in org.jgrapht.traverse">AbstractGraphIterator</a>&lt;V,E&gt;</pre>
<div class="block">Provides a cross-connected-component traversal functionality for iterator
subclasses.</div>
<dl><dt><span class="strong">Since:</span></dt>
<dd>Jan 31, 2004</dd>
<dt><span class="strong">Author:</span></dt>
<dd>Barak Naveh</dd></dl>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>protected static class&nbsp;</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/traverse/CrossComponentIterator.VisitColor.html" title="enum in org.jgrapht.traverse">CrossComponentIterator.VisitColor</a></strong></code>
<div class="block">Standard vertex visit state enumeration.</div>
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<h3>Fields inherited from class&nbsp;org.jgrapht.traverse.<a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html" title="class in org.jgrapht.traverse">AbstractGraphIterator</a></h3>
<code><a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html#nListeners">nListeners</a></code></li>
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<th class="colOne" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../org/jgrapht/traverse/CrossComponentIterator.html#CrossComponentIterator(org.jgrapht.Graph,%20V)">CrossComponentIterator</a></strong>(<a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a>&lt;<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>,<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">E</a>&gt;&nbsp;g,
<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;startVertex)</code>
<div class="block">Creates a new iterator for the specified graph.</div>
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<td class="colFirst"><code>protected abstract void</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/traverse/CrossComponentIterator.html#encounterVertex(V,%20E)">encounterVertex</a></strong>(<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;vertex,
<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">E</a>&nbsp;edge)</code>
<div class="block">Update data structures the first time we see a vertex.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected abstract void</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/traverse/CrossComponentIterator.html#encounterVertexAgain(V,%20E)">encounterVertexAgain</a></strong>(<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;vertex,
<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">E</a>&nbsp;edge)</code>
<div class="block">Called whenever we re-encounter a vertex.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/traverse/CrossComponentIterator.html#finishVertex(V)">finishVertex</a></strong>(<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;vertex)</code>
<div class="block">Called when a vertex has been finished (meaning is dependent on traversal
represented by subclass).</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a>&lt;<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>,<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">E</a>&gt;</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/traverse/CrossComponentIterator.html#getGraph()">getGraph</a></strong>()</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">D</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/traverse/CrossComponentIterator.html#getSeenData(V)">getSeenData</a></strong>(<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;vertex)</code>
<div class="block">Access the data stored for a seen vertex.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/traverse/CrossComponentIterator.html#hasNext()">hasNext</a></strong>()</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected abstract boolean</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/traverse/CrossComponentIterator.html#isConnectedComponentExhausted()">isConnectedComponentExhausted</a></strong>()</code>
<div class="block">Returns <tt>true</tt> if there are no more uniterated vertices in the
currently iterated connected component; <tt>false</tt> otherwise.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/traverse/CrossComponentIterator.html#isSeenVertex(java.lang.Object)">isSeenVertex</a></strong>(<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>&nbsp;vertex)</code>
<div class="block">Determines whether a vertex has been seen yet by this traversal.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/traverse/CrossComponentIterator.html#next()">next</a></strong>()</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected abstract <a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/traverse/CrossComponentIterator.html#provideNextVertex()">provideNextVertex</a></strong>()</code>
<div class="block">Returns the vertex to be returned in the following call to the iterator
<code>next</code> method.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">D</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/traverse/CrossComponentIterator.html#putSeenData(V,%20D)">putSeenData</a></strong>(<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;vertex,
<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">D</a>&nbsp;data)</code>
<div class="block">Stores iterator-dependent data for a vertex that has been seen.</div>
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<h3>Methods inherited from class&nbsp;org.jgrapht.traverse.<a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html" title="class in org.jgrapht.traverse">AbstractGraphIterator</a></h3>
<code><a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html#addTraversalListener(org.jgrapht.event.TraversalListener)">addTraversalListener</a>, <a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html#fireConnectedComponentFinished(org.jgrapht.event.ConnectedComponentTraversalEvent)">fireConnectedComponentFinished</a>, <a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html#fireConnectedComponentStarted(org.jgrapht.event.ConnectedComponentTraversalEvent)">fireConnectedComponentStarted</a>, <a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html#fireEdgeTraversed(org.jgrapht.event.EdgeTraversalEvent)">fireEdgeTraversed</a>, <a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html#fireVertexFinished(org.jgrapht.event.VertexTraversalEvent)">fireVertexFinished</a>, <a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html#fireVertexTraversed(org.jgrapht.event.VertexTraversalEvent)">fireVertexTraversed</a>, <a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html#isCrossComponentTraversal()">isCrossComponentTraversal</a>, <a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html#isReuseEvents()">isReuseEvents</a>, <a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html#remove()">remove</a>, <a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html#removeTraversalListener(org.jgrapht.event.TraversalListener)">removeTraversalListener</a>, <a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html#setCrossComponentTraversal(boolean)">setCrossComponentTraversal</a>, <a href="../../../org/jgrapht/traverse/AbstractGraphIterator.html#setReuseEvents(boolean)">setReuseEvents</a></code></li>
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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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<h3>Constructor Detail</h3>
<a name="CrossComponentIterator(org.jgrapht.Graph,java.lang.Object)">
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<h4>CrossComponentIterator</h4>
<pre>public&nbsp;CrossComponentIterator(<a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a>&lt;<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>,<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">E</a>&gt;&nbsp;g,
<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;startVertex)</pre>
<div class="block">Creates a new iterator for the specified graph. Iteration will start at
the specified start vertex. If the specified start vertex is <code>
null</code>, Iteration will start at an arbitrary graph vertex.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>g</code> - the graph to be iterated.</dd><dd><code>startVertex</code> - the vertex iteration to be started.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang">IllegalArgumentException</a></code> - if <code>g==null</code> or does not
contain <code>startVertex</code></dd></dl>
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<h4>getGraph</h4>
<pre>public&nbsp;<a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a>&lt;<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>,<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">E</a>&gt;&nbsp;getGraph()</pre>
<dl><dt><span class="strong">Returns:</span></dt><dd>the graph being traversed</dd></dl>
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<h4>hasNext</h4>
<pre>public&nbsp;boolean&nbsp;hasNext()</pre>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Iterator.html?is-external=true#hasNext()" title="class or interface in java.util"><code>Iterator.hasNext()</code></a></dd></dl>
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<h4>next</h4>
<pre>public&nbsp;<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;next()</pre>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Iterator.html?is-external=true#next()" title="class or interface in java.util"><code>Iterator.next()</code></a></dd></dl>
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<h4>isConnectedComponentExhausted</h4>
<pre>protected abstract&nbsp;boolean&nbsp;isConnectedComponentExhausted()</pre>
<div class="block">Returns <tt>true</tt> if there are no more uniterated vertices in the
currently iterated connected component; <tt>false</tt> otherwise.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd><tt>true</tt> if there are no more uniterated vertices in the
currently iterated connected component; <tt>false</tt> otherwise.</dd></dl>
</li>
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<h4>encounterVertex</h4>
<pre>protected abstract&nbsp;void&nbsp;encounterVertex(<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;vertex,
<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">E</a>&nbsp;edge)</pre>
<div class="block">Update data structures the first time we see a vertex.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>vertex</code> - the vertex encountered</dd><dd><code>edge</code> - the edge via which the vertex was encountered, or null if the
vertex is a starting point</dd></dl>
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<h4>provideNextVertex</h4>
<pre>protected abstract&nbsp;<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;provideNextVertex()</pre>
<div class="block">Returns the vertex to be returned in the following call to the iterator
<code>next</code> method.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>the next vertex to be returned by this iterator.</dd></dl>
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<h4>getSeenData</h4>
<pre>protected&nbsp;<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">D</a>&nbsp;getSeenData(<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;vertex)</pre>
<div class="block">Access the data stored for a seen vertex.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>vertex</code> - a vertex which has already been seen.</dd>
<dt><span class="strong">Returns:</span></dt><dd>data associated with the seen vertex or <code>null</code> if no
data was associated with the vertex. A <code>null</code> return can also
indicate that the vertex was explicitly associated with <code>
null</code>.</dd></dl>
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<h4>isSeenVertex</h4>
<pre>protected&nbsp;boolean&nbsp;isSeenVertex(<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>&nbsp;vertex)</pre>
<div class="block">Determines whether a vertex has been seen yet by this traversal.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>vertex</code> - vertex in question</dd>
<dt><span class="strong">Returns:</span></dt><dd><tt>true</tt> if vertex has already been seen</dd></dl>
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<h4>encounterVertexAgain</h4>
<pre>protected abstract&nbsp;void&nbsp;encounterVertexAgain(<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;vertex,
<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">E</a>&nbsp;edge)</pre>
<div class="block">Called whenever we re-encounter a vertex. The default implementation does
nothing.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>vertex</code> - the vertex re-encountered</dd><dd><code>edge</code> - the edge via which the vertex was re-encountered</dd></dl>
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<h4>putSeenData</h4>
<pre>protected&nbsp;<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">D</a>&nbsp;putSeenData(<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;vertex,
<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">D</a>&nbsp;data)</pre>
<div class="block">Stores iterator-dependent data for a vertex that has been seen.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>vertex</code> - a vertex which has been seen.</dd><dd><code>data</code> - data to be associated with the seen vertex.</dd>
<dt><span class="strong">Returns:</span></dt><dd>previous value associated with specified vertex or <code>
null</code> if no data was associated with the vertex. A <code>
null</code> return can also indicate that the vertex was explicitly
associated with <code>null</code>.</dd></dl>
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<h4>finishVertex</h4>
<pre>protected&nbsp;void&nbsp;finishVertex(<a href="../../../org/jgrapht/traverse/CrossComponentIterator.html" title="type parameter in CrossComponentIterator">V</a>&nbsp;vertex)</pre>
<div class="block">Called when a vertex has been finished (meaning is dependent on traversal
represented by subclass).</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>vertex</code> - vertex which has been finished</dd></dl>
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