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## org.jgrapht.event
Class GraphVertexChangeEvent<V>

    java.lang.Object
      java.util.EventObject
          org.jgrapht.event.GraphChangeEvent
              org.jgrapht.event.GraphVertexChangeEvent<V>

All Implemented Interfaces:
  java.io.Serializable

    public class GraphVertexChangeEvent<V>

extends GraphChangeEvent

An event which indicates that a graph vertex has changed, or is about to change. The event can be used either as an indication after the vertex has been added or removed, or before it is added. The type of the event can be tested using the `GraphChangeEvent.getType()` method.

Since:
  Aug 10, 2003
Author:
  Barak Naveh
See Also:
  Serialized Form

Field Summary
`static int` | `BEFORE_VERTEX_ADDED` Before vertex added event.
`static int` | `BEFORE_VERTEX_REMOVED` Before vertex removed event.
`protected V` | `vertex` The vertex that this event is related to.
`static int` | `VERTEX_ADDED` Vertex added event.
`static int` | `VERTEX_REMOVED` Vertex removed event.

Fields inherited from class org.jgrapht.event.GraphChangeEvent
`type`

Fields inherited from class java.util.EventObject
`source`

Constructor Summary
`GraphVertexChangeEvent(java.lang.Object eventSource, int type, V vertex)` Creates a new GraphVertexChangeEvent object.

Method Summary
`V` | `getVertex()` Returns the vertex that this event is related to.

Methods inherited from class org.jgrapht.event.GraphChangeEvent
`getType`

Methods inherited from class java.util.EventObject
`getSource, toString`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### BEFORE_VERTEX_ADDED

    public static final int BEFORE_VERTEX_ADDED

  Before vertex added event. This event is fired before a vertex is added to a graph.

  See Also:
    Constant Field Values

### BEFORE_VERTEX_REMOVED

    public static final int BEFORE_VERTEX_REMOVED

  Before vertex removed event. This event is fired before a vertex is removed from a graph.

  See Also:
    Constant Field Values

### VERTEX_ADDED

    public static final int VERTEX_ADDED

  Vertex added event. This event is fired after a vertex is added to a graph.

  See Also:
    Constant Field Values

### VERTEX_REMOVED

    public static final int VERTEX_REMOVED

  Vertex removed event. This event is fired after a vertex is removed from a graph.

  See Also:
    Constant Field Values

### vertex

    protected V vertex

  The vertex that this event is related to.

Constructor Detail

### GraphVertexChangeEvent

    public GraphVertexChangeEvent(java.lang.Object eventSource,
                                  int type,
                                  V vertex)

  Creates a new GraphVertexChangeEvent object.

  Parameters:
    `eventSource` - the source of the event.
    `type` - the type of the event.
    `vertex` - the vertex that the event is related to.

Method Detail

### getVertex

    public V getVertex()

  Returns the vertex that this event is related to.

  Returns:
    the vertex that this event is related to.

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