Dear jgrapht users,

In my problem, I want to traverse the graph to find a certain vertex, then delete the vertex accompanied with all the edges connected to it. Then I will traverse the remained graph again, find another vertex by some special rules, deleted the vertex and all the connected edges…

However, when I translate the procedure into JAVA codes, I always receive the same error message:

java.util.ConcurrentModificationException

at java.util.ArrayList$Itr.checkForComodification(Unknown Source)

at java.util.ArrayList$Itr.next(Unknown Source)

at java.util.Collections$UnmodifiableCollection$1.next(Unknown Source)

at org.jgrapht.graph.AbstractGraph.removeAllEdges(AbstractGraph.java:89)

……

The following is my JAVA code related to this:

**for** (Node myNode : myNodeList) {

// Some codes to find the certain node, the name is myNode

// Some operations

myGraph.removeAllEdges(myGraph.edgesOf(myNode));

myGraph.removeVertex(myNode);

}

This problem has bothered me for quite a long time, many thanks in advance!

Best Regards

Zhigang Wu