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<title>AbstractGraph (JGraphT : a free Java graph library)</title>
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<div class="subTitle">org.jgrapht.graph</div>
<h2 title="Class AbstractGraph" class="title">Class AbstractGraph&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.graph.AbstractGraph&lt;V,E&gt;</li>
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<dl>
<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a>&lt;V,E&gt;</dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../org/jgrapht/graph/AbstractBaseGraph.html" title="class in org.jgrapht.graph">AbstractBaseGraph</a>, <a href="../../../org/jgrapht/graph/GraphDelegator.html" title="class in org.jgrapht.graph">GraphDelegator</a>, <a href="../../../org/jgrapht/graph/GraphUnion.html" title="class in org.jgrapht.graph">GraphUnion</a>, <a href="../../../org/jgrapht/graph/MaskSubgraph.html" title="class in org.jgrapht.graph">MaskSubgraph</a>, <a href="../../../org/jgrapht/graph/Subgraph.html" title="class in org.jgrapht.graph">Subgraph</a></dd>
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<pre>public abstract class <span class="strong">AbstractGraph&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/Graph.html" title="interface in org.jgrapht">Graph</a>&lt;V,E&gt;</pre>
<div class="block">A skeletal implementation of the <tt>Graph</tt> interface, to minimize the
effort required to implement graph interfaces. This implementation is
applicable to both: directed graphs and undirected graphs.</div>
<dl><dt><span class="strong">Author:</span></dt>
<dd>Barak Naveh</dd>
<dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht"><code>Graph</code></a>,
<a href="../../../org/jgrapht/DirectedGraph.html" title="interface in org.jgrapht"><code>DirectedGraph</code></a>,
<a href="../../../org/jgrapht/UndirectedGraph.html" title="interface in org.jgrapht"><code>UndirectedGraph</code></a></dd></dl>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier</th>
<th class="colLast" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/graph/AbstractGraph.html#AbstractGraph()">AbstractGraph</a></strong>()</code>
<div class="block">Construct a new empty graph object.</div>
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<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/graph/AbstractGraph.html#assertVertexExist(V)">assertVertexExist</a></strong>(<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&nbsp;v)</code>
<div class="block">Ensures that the specified vertex exists in this graph, or else throws
exception.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/graph/AbstractGraph.html#containsEdge(V,%20V)">containsEdge</a></strong>(<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&nbsp;sourceVertex,
<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&nbsp;targetVertex)</code>
<div class="block">Returns <tt>true</tt> if and only if this graph contains an edge going
from the source vertex to the target vertex.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/graph/AbstractGraph.html#equals(java.lang.Object)">equals</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;obj)</code>
<div class="block">Indicates whether some other object is "equal to" this graph.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/graph/AbstractGraph.html#hashCode()">hashCode</a></strong>()</code>
<div class="block">Returns a hash code value for this graph.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/graph/AbstractGraph.html#removeAllEdges(java.util.Collection)">removeAllEdges</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;? extends <a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">E</a>&gt;&nbsp;edges)</code>
<div class="block">Removes all the edges in this graph that are also contained in the
specified edge collection.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/graph/AbstractGraph.html#removeAllEdges(E[])">removeAllEdges</a></strong>(<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">E</a>[]&nbsp;edges)</code>
<div class="block">Removes all the edges in this graph that are also contained in the
specified edge array.</div>
</td>
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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/graph/AbstractGraph.html" title="type parameter in AbstractGraph">E</a>&gt;</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/graph/AbstractGraph.html#removeAllEdges(V,%20V)">removeAllEdges</a></strong>(<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&nbsp;sourceVertex,
<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&nbsp;targetVertex)</code>
<div class="block">Removes all the edges going from the specified source vertex to the
specified target vertex, and returns a set of all removed edges.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/graph/AbstractGraph.html#removeAllVertices(java.util.Collection)">removeAllVertices</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;? extends <a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&gt;&nbsp;vertices)</code>
<div class="block">Removes all the vertices in this graph that are also contained in the
specified vertex collection.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/graph/AbstractGraph.html#toString()">toString</a></strong>()</code>
<div class="block">Returns a string of the parenthesized pair (V, E) representing this
G=(V,E) graph.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../org/jgrapht/graph/AbstractGraph.html#toStringFromSets(java.util.Collection,%20java.util.Collection,%20boolean)">toStringFromSets</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;? extends <a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&gt;&nbsp;vertexSet,
<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;? extends <a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">E</a>&gt;&nbsp;edgeSet,
boolean&nbsp;directed)</code>
<div class="block">Helper for subclass implementations of toString( ).</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#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#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#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>Methods inherited from interface&nbsp;org.jgrapht.<a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a></h3>
<code><a href="../../../org/jgrapht/Graph.html#addEdge(V,%20V)">addEdge</a>, <a href="../../../org/jgrapht/Graph.html#addEdge(V,%20V,%20E)">addEdge</a>, <a href="../../../org/jgrapht/Graph.html#addVertex(V)">addVertex</a>, <a href="../../../org/jgrapht/Graph.html#containsEdge(E)">containsEdge</a>, <a href="../../../org/jgrapht/Graph.html#containsVertex(V)">containsVertex</a>, <a href="../../../org/jgrapht/Graph.html#edgeSet()">edgeSet</a>, <a href="../../../org/jgrapht/Graph.html#edgesOf(V)">edgesOf</a>, <a href="../../../org/jgrapht/Graph.html#getAllEdges(V,%20V)">getAllEdges</a>, <a href="../../../org/jgrapht/Graph.html#getEdge(V,%20V)">getEdge</a>, <a href="../../../org/jgrapht/Graph.html#getEdgeFactory()">getEdgeFactory</a>, <a href="../../../org/jgrapht/Graph.html#getEdgeSource(E)">getEdgeSource</a>, <a href="../../../org/jgrapht/Graph.html#getEdgeTarget(E)">getEdgeTarget</a>, <a href="../../../org/jgrapht/Graph.html#getEdgeWeight(E)">getEdgeWeight</a>, <a href="../../../org/jgrapht/Graph.html#removeEdge(E)">removeEdge</a>, <a href="../../../org/jgrapht/Graph.html#removeEdge(V,%20V)">removeEdge</a>, <a href="../../../org/jgrapht/Graph.html#removeVertex(V)">removeVertex</a>, <a href="../../../org/jgrapht/Graph.html#vertexSet()">vertexSet</a></code></li>
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<h3>Constructor Detail</h3>
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<h4>AbstractGraph</h4>
<pre>protected&nbsp;AbstractGraph()</pre>
<div class="block">Construct a new empty graph object.</div>
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<h4>containsEdge</h4>
<pre>public&nbsp;boolean&nbsp;containsEdge(<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&nbsp;sourceVertex,
<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&nbsp;targetVertex)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/jgrapht/Graph.html#containsEdge(V,%20V)">Graph</a></code></strong></div>
<div class="block">Returns <tt>true</tt> if and only if this graph contains an edge going
from the source vertex to the target vertex. In undirected graphs the
same result is obtained when source and target are inverted. If any of
the specified vertices does not exist in the graph, or if is <code>
null</code>, returns <code>false</code>.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/jgrapht/Graph.html#containsEdge(V,%20V)">containsEdge</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a>&lt;<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>,<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">E</a>&gt;</code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>sourceVertex</code> - source vertex of the edge.</dd><dd><code>targetVertex</code> - target vertex of the edge.</dd>
<dt><span class="strong">Returns:</span></dt><dd><tt>true</tt> if this graph contains the specified edge.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/jgrapht/Graph.html#containsEdge(V,%20V)"><code>Graph.containsEdge(Object, Object)</code></a></dd></dl>
</li>
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<h4>removeAllEdges</h4>
<pre>public&nbsp;boolean&nbsp;removeAllEdges(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;? extends <a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">E</a>&gt;&nbsp;edges)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/jgrapht/Graph.html#removeAllEdges(java.util.Collection)">Graph</a></code></strong></div>
<div class="block">Removes all the edges in this graph that are also contained in the
specified edge collection. After this call returns, this graph will
contain no edges in common with the specified edges. This method will
invoke the <a href="../../../org/jgrapht/Graph.html#removeEdge(E)"><code>Graph.removeEdge(Object)</code></a> method.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/jgrapht/Graph.html#removeAllEdges(java.util.Collection)">removeAllEdges</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a>&lt;<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>,<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">E</a>&gt;</code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>edges</code> - edges to be removed from this graph.</dd>
<dt><span class="strong">Returns:</span></dt><dd><tt>true</tt> if this graph changed as a result of the call</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/jgrapht/Graph.html#removeAllEdges(java.util.Collection)"><code>Graph.removeAllEdges(Collection)</code></a></dd></dl>
</li>
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<a name="removeAllEdges(java.lang.Object,java.lang.Object)">
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<h4>removeAllEdges</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/graph/AbstractGraph.html" title="type parameter in AbstractGraph">E</a>&gt;&nbsp;removeAllEdges(<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&nbsp;sourceVertex,
<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&nbsp;targetVertex)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/jgrapht/Graph.html#removeAllEdges(V,%20V)">Graph</a></code></strong></div>
<div class="block">Removes all the edges going from the specified source vertex to the
specified target vertex, and returns a set of all removed edges. Returns
<code>null</code> if any of the specified vertices does not exist in the
graph. If both vertices exist but no edge is found, returns an empty set.
This method will either invoke the <a href="../../../org/jgrapht/Graph.html#removeEdge(E)"><code>Graph.removeEdge(Object)</code></a> method, or
the <a href="../../../org/jgrapht/Graph.html#removeEdge(V,%20V)"><code>Graph.removeEdge(Object, Object)</code></a> method.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/jgrapht/Graph.html#removeAllEdges(V,%20V)">removeAllEdges</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a>&lt;<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>,<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">E</a>&gt;</code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>sourceVertex</code> - source vertex of the edge.</dd><dd><code>targetVertex</code> - target vertex of the edge.</dd>
<dt><span class="strong">Returns:</span></dt><dd>the removed edges, or <code>null</code> if either vertex is not
part of graph</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/jgrapht/Graph.html#removeAllEdges(V,%20V)"><code>Graph.removeAllEdges(Object, Object)</code></a></dd></dl>
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<h4>removeAllVertices</h4>
<pre>public&nbsp;boolean&nbsp;removeAllVertices(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;? extends <a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&gt;&nbsp;vertices)</pre>
<div class="block"><strong>Description copied from interface:&nbsp;<code><a href="../../../org/jgrapht/Graph.html#removeAllVertices(java.util.Collection)">Graph</a></code></strong></div>
<div class="block">Removes all the vertices in this graph that are also contained in the
specified vertex collection. After this call returns, this graph will
contain no vertices in common with the specified vertices. This method
will invoke the <a href="../../../org/jgrapht/Graph.html#removeVertex(V)"><code>Graph.removeVertex(Object)</code></a> method.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../org/jgrapht/Graph.html#removeAllVertices(java.util.Collection)">removeAllVertices</a></code>&nbsp;in interface&nbsp;<code><a href="../../../org/jgrapht/Graph.html" title="interface in org.jgrapht">Graph</a>&lt;<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>,<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">E</a>&gt;</code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>vertices</code> - vertices to be removed from this graph.</dd>
<dt><span class="strong">Returns:</span></dt><dd><tt>true</tt> if this graph changed as a result of the call</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/jgrapht/Graph.html#removeAllVertices(java.util.Collection)"><code>Graph.removeAllVertices(Collection)</code></a></dd></dl>
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<h4>toString</h4>
<pre>public&nbsp;<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;toString()</pre>
<div class="block">Returns a string of the parenthesized pair (V, E) representing this
G=(V,E) graph. 'V' is the string representation of the vertex set, and
'E' is the string representation of the edge set.</div>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code><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></code>&nbsp;in class&nbsp;<code><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></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>a string representation of this graph.</dd></dl>
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<h4>assertVertexExist</h4>
<pre>protected&nbsp;boolean&nbsp;assertVertexExist(<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&nbsp;v)</pre>
<div class="block">Ensures that the specified vertex exists in this graph, or else throws
exception.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>v</code> - vertex</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>true</code> if this assertion holds.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang">NullPointerException</a></code> - if specified vertex is <code>null</code>.</dd>
<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 specified vertex does not exist in
this graph.</dd></dl>
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<h4>removeAllEdges</h4>
<pre>protected&nbsp;boolean&nbsp;removeAllEdges(<a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">E</a>[]&nbsp;edges)</pre>
<div class="block">Removes all the edges in this graph that are also contained in the
specified edge array. After this call returns, this graph will contain no
edges in common with the specified edges. This method will invoke the
<a href="../../../org/jgrapht/Graph.html#removeEdge(E)"><code>Graph.removeEdge(Object)</code></a> method.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>edges</code> - edges to be removed from this graph.</dd>
<dt><span class="strong">Returns:</span></dt><dd><tt>true</tt> if this graph changed as a result of the call.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../org/jgrapht/Graph.html#removeEdge(E)"><code>Graph.removeEdge(Object)</code></a>,
<a href="../../../org/jgrapht/Graph.html#containsEdge(E)"><code>Graph.containsEdge(Object)</code></a></dd></dl>
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<h4>toStringFromSets</h4>
<pre>protected&nbsp;<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;toStringFromSets(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;? extends <a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">V</a>&gt;&nbsp;vertexSet,
<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;? extends <a href="../../../org/jgrapht/graph/AbstractGraph.html" title="type parameter in AbstractGraph">E</a>&gt;&nbsp;edgeSet,
boolean&nbsp;directed)</pre>
<div class="block">Helper for subclass implementations of toString( ).</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>vertexSet</code> - the vertex set V to be printed</dd><dd><code>edgeSet</code> - the edge set E to be printed</dd><dd><code>directed</code> - true to use parens for each edge (representing directed);
false to use curly braces (representing undirected)</dd>
<dt><span class="strong">Returns:</span></dt><dd>a string representation of (V,E)</dd></dl>
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<h4>hashCode</h4>
<pre>public&nbsp;int&nbsp;hashCode()</pre>
<div class="block">Returns a hash code value for this graph. The hash code of a graph is
defined to be the sum of the hash codes of vertices and edges in the
graph. It is also based on graph topology and edges weights.</div>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code><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></code>&nbsp;in class&nbsp;<code><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></code></dd>
<dt><span class="strong">Returns:</span></dt><dd>the hash code value this graph</dd><dt><span class="strong">See Also:</span></dt><dd><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"><code>Object.hashCode()</code></a></dd></dl>
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<h4>equals</h4>
<pre>public&nbsp;boolean&nbsp;equals(<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;obj)</pre>
<div class="block">Indicates whether some other object is "equal to" this graph. Returns
<code>true</code> if the given object is also a graph, the two graphs are
instances of the same graph class, have identical vertices and edges sets
with the same weights.</div>
<dl>
<dt><strong>Overrides:</strong></dt>
<dd><code><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></code>&nbsp;in class&nbsp;<code><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></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>obj</code> - object to be compared for equality with this graph</dd>
<dt><span class="strong">Returns:</span></dt><dd><code>true</code> if the specified object is equal to this graph</dd><dt><span class="strong">See Also:</span></dt><dd><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"><code>Object.equals(Object)</code></a></dd></dl>
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