Comment #1 on issue 164 by heue...@gmail.com: PNode#moveToFront change to
avoid java.util.ConcurrentModificationException
http://code.google.com/p/piccolo2d/issues/detail?id=164
I vote to mark this as WontFix.
The method is throwing ConcurrentModificationException because that's what
is
happening, you are trying to modify the list as you are iterating over it.
The javadoc for PNode.getChildrenReference() reads "This list should not be
modified."
http://www.piccolo2d.org/doc/piccolo2d.java/release-1.2.1/apidocs/edu/umd/cs/piccolo/PNode.html#getChildrenReference%28%29
A workaround would be to copy the children list into a new ArrayList
List children = new ArrayList(node.getChildrenReference());
for (Iterator iterator = children.iterator(); iterator.hasNext(); )
{
PNode child = (PNode) iterator.next();
child.moveToFront();
}
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