The call to detach modifies the list. As this is done outside the visibility of the iterator is is concurrent, hence the exception.
Copy the list and then iterate and it shoul be OK Mike > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > [EMAIL PROTECTED] > Sent: Tuesday 22 June 2004 17:20 > To: [EMAIL PROTECTED] > Subject: [dom4j-user] ConcurrentModificationException > > > Hi! > > I posted the problem recently and actually got it working - > until now. For > some mysterious reason it suddenly does throw an > ConcurrentModifcationException in my Visitor (second for loop): > > class Foo > { > private static final class HeisetextLegacyVisitor > extends VisitorSupport > { > private static final String HEISETEXT = "heisetext"; > > public void visit( Element node ) > { > if( node.getName().equalsIgnoreCase( > HEISETEXT ) ) > { > int index = -1; > > // hard to touch the tip of > your nose when you are wankered... > List<Element> l = > node.getParent().elements(); > for( int i = 0; i < l.size(); i++ ) > { > if ( l.get( i > ).getName().equalsIgnoreCase( HEISETEXT ) ) > { > index=i; > break; > } > } > > assert index != -1; > > for ( Iterator<Element> it = > node.elementIterator(); it.hasNext(); ) > // HERE's where the exception is thrown > l.add( index++, > (Element)it.next().detach() ); > > l.remove( index ); // heisetext > } > } > } > private static final Visitor LEGACY = new > HeisetextLegacyVisitor(); > > public void go() > { > dom.accept( LEGACY ); > } > } > > Does anybody see why this exception is thrown here? > > [java] java.util.ConcurrentModificationException > [java] at > java.util.AbstractList$Itr.checkForComodification(AbstractList .java:449) > [java] at > java.util.AbstractList$Itr.next(AbstractList.java:420) > [java] at > org.dom4j.tree.FilterIterator.findNext(FilterIterator.java:70) > [java] at > org.dom4j.tree.FilterIterator.next(FilterIterator.java:45) > [java] at Foo$HeisetextLegacyVisitor.visit > > Timo > > > ------------------------------------------------------- > This SF.Net email sponsored by Black Hat Briefings & Training. > Attend Black Hat Briefings & Training, Las Vegas July 24-29 - > digital self defense, top technical experts, no vendor pitches, > unmatched networking opportunities. Visit www.blackhat.com > _______________________________________________ > dom4j-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/dom4j-user > ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ dom4j-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dom4j-user
