[jdom-interest] java.util.ConcurrentModificationException

[THIAIMY NGUYEN]

Hi, I got this message "java.util.ConcurrentModificationException" when I 
want to do element.setText("coucou"); in a loop for(Iterator 
z=courant.getDescendants();z.hasNext();)

Anyone, can help me??Thanks a lots
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static void afficheAll1(Element intro,Element p) {

		List listRacine = racine.getChildren();

		Iterator i = listRacine.iterator();

		String introTxt=intro.getName();
		String courantTxt;
		String pTxt=p.getName();
		String chaine;
		Element courant1;
		String chaine1;

		while(i.hasNext()){
			Element courant = (Element)i.next();
			courantTxt=courant.getName();
			if(courantTxt.equals(introTxt)){

			for(Iterator z=courant.getDescendants();z.hasNext();){
				Object node=z.next();

				if(node instanceof Element){
			                courant1=(Element)node;
			    	String courantNode =courant1.getName();
				if(courantNode.equals(pTxt)){

			                chaine=courant1.getText();
			      	chaine=traitementChaine(chaine);
			      	chaine=traitementChaine1(chaine);

			      	courant1.setText("coucou");
			      						                                                          }

					}

				}

			}
		}
}